Bmim Bf4 Synthesis Essays

Found 3790 essays.

Synthesis of New Coordination Polymers or MOFs

The coordination polymer [Cu(I)(bpp)]BF [bpp = 1,3-bis(4-pyridyl)propane] [56] was prepared by solvothermal reaction using the ionic liquid [bmim][BF4] (bmim = 1-butyl-3-methylimidazolium).The synthesis parameters such as solvent, electrolyte, voltage-current density, and temperature on the synthesis yield and textural properties of the MOFs obtained, was investigated and the produced MOF structures were characterized by X-ray diffraction, gas adsorption, atomic force microscopy, diffuse reflectance infrared Fourier transform spectroscopy, and scanning electron microscopy.The critical contribution of moisture in mechanochemical synthesis of pillared type MOFs was recently reported by Kitagawa group [91].Recently, a mechanochemical appro...

2182 words (5.5 pages)
Improving Carbon Dioxide Solubility in Ionic Liquids Essay

The biggest effect was seen in increasing alkyl chain length on the cation.The previous studies showed CO2 solubility for 1-butyl3-methylimidazolium ([bmim]+) based ILs at 60 °C increased in the order nitrate ([NO3]-) < tetrafluoroborate ([BF4]-) < dicyanamide ([DCA]-) ?To date we have studied the solubility of CO2 in a range ofcommonly used ILs.2,23-29 We found that there were a number of factors that controlled the CO2 solubility in the chosen ILs, both cation and anion related.26 Of the ionic liquids studied, the anion played the biggest role in CO2 solubility, a fact that was supported by a recent X-ray diffraction study by Kanakubo et al.30 Anions that contain fluoroalkyl groups were found to have some of the highest CO2 solub...

836 words (2.1 pages)
Desulfurization Simulated Gasoil

Reaction conditions: 5 mL model oil (S content = 500 ppm); time = 1 h; T = 40 °C; H O = 64 µL, [Bmim]PF = 1 mL.3 Influence of different sulfur-containing compounds... Synthesis of ionic liquid and model oil: Ionic liquid [Bmim]PF was synthesized as mentioned in the literature [10].Reaction conditions: 5 mL model oil; S content (BT, DBT and 4,6-DMDBT was 250, 500 and 250 ppm respectively); (STA) PW V = 3.5 mg; time = 3 h; T = 40 °C; H O = 64 µL; [Bmim]PF = 1mL.[9] Y. Liu, S. Liu, S. Liu, D. Liang, S. Li, Q. Tang, X. Wang, J. Miao, Z. Shi, Z. Zheng, Facile Synthesis of a Nanocrystalline Metal–Organic Framework Impregnated with a Phosphovanadomolybdate and Its Remarkable Catalytic Performance in Ultradeep Oxidative Desulfurizatio...

2020 words (5.1 pages)
Developing Natural Gas Sweetening Processes

Because test particle insertion method in GROMACS is currently limited to inserting a single charge group, the excess chemical potential of CO and CH can only calculated one at a time.In summary, the solubilities and selectivities of CO and CH pure gas and gas mixtures in four ILs will be calculated.For each IL, the equilibration trajectory of pure IL in NPT ensemble is needed.At least, we can get information about the relative affinity of CO to ILs and CH to ILs.where is the potential energy between the solute and the solvent, is the volume of the system, =1/ , and the angle brackets denote an isobaric-isothermal average over trajectory of the system without solute.

1841 words (4.6 pages)
Modern defense Essay

Nxe5; on 13 ... exd4, Tal could continue with 14.Mikhaïl Tal-Georgi Tringov, Interzonal d'Amsterdam (Netherlands), 1964 .Ce6 #, and if 17 ... Rd8, then 18 .Bc4 Da5 9. o-o e6 ?!(the lesser evil was 13 ... Bf8 14.

1599 words (4.0 pages)
Organic Synthesis of Polymers | Essay

The significance of these reagents is mostly felt in the new method of combinatorial synthesis, where high output stage phase synthesis is deliberated with polymer supported reagents.introduced the synthesis of chloro and bromopolymaleimide and used as halogenating agents.The use of suitable additions of polymer-supported reagents, catalysts and/or scavengers is a powerful method, both for the synthesis of single organic compounds and for parallel synthesis.The term “liquid-phase” synthesis was earlier used to highlight the heterogeneity between solid-phase peptide synthesis and a method of synthesis on soluble polyethylene glycol.This methodology, termed liquid-phase synthesis, in essence avoids the hurdles of solid-phase synthesis wh...

1854 words (4.6 pages)
Heterocycles: Types and Biosynthesis

Scheme 14: One pot synthesis of isoindolinones .Scheme 12: Synthesis of pyrrole, pyridine and indole nitrogen containing heterocycles .Another example of a tandem reaction for heterocyclic synthesis is the intermolecular 1,3-dipolar cycloaddition of nitrones for the formation of cyclic isooxazolidines ( .New approaches have arisen in the past decades involving palladium chemistry and lithiation procedure for the synthesis of substituted isoindolinones that have proved to be easier to handle.Two of the most common are: Fischer-indole synthesis and a Hantzsch synthesis to obtain the pyridines.

2943 words (7.4 pages)
Importance of Natural Product Synthesis

The second major achievement in the field of organic synthesis is the synthesis of acetic acid from elemental carbon by Kolbe in 1845.Considered by many as the flagship of organic synthesis, natural product synthesis symbolizes the power of chemical synthesis at any given time and defines its scope and limitations.Today the art of organic synthesis has improved to astoundingly high levels of sophistication.Some modern classical examples of total synthesis include the synthesis of prostaglandin PG and Ginkgolide by E. J Corey, Ingenol by Wood, Brevetoxin by Nicolaou, Vancomycin by Evans, Taxol by Holton , Nicolaou , Wender and Danishefsky groups independently.The discipline of natural product synthesis today, is an important field of...

1330 words (3.3 pages)
Explanatory Synthesis Essay

Although all writing is recursive in nature, here are a few guidelines to follow that will help you organize and write your synthesis paper: • Consider your purpose in writing.In the explanatory synthesis, writers divide a subject into its component parts and present them to the reader in a clear and orderly fashion.Then order your synthesis according to a structure that is consistent.The Explanatory Synthesis .The explanatory synthesis uses two or more sources to convey information about a given topic; it does not provide for the writer’s opinion on the topic.

1638 words (4.1 pages)
Marine Genomes in Nanoparticles (NPs) Synthesis

But, limited studies are available on synthesis of NPs through marine organisams, However, Marine resoures are biologically deserves for the synthesis of the NPs with the higher potenical use of drug delvery due to their distinctive features such as ease of use and good functions and biocompatability and ability to target the cancer cells (Asmathunisha and Kathiresan, 2013).Several researchers are reported the efficiency of the marine fungus on the NPs synthesis with high pharmaceutical applications.Interestingly the Vala (2014) reported the efficiency of the on synthesis of gold NPs.Microbial capping agents are added as the stabilizer in to the reaction of the NPs synthesis to ensure the prevention of the aggregation and uniform morpho...

2476 words (6.2 pages)
How to Write a Synthesis Essay

An explanatory synthesis helps readers to understand a topic.In an academic synthesis, you make explicit the relationships that you have inferred among separate sources.You will not be writing explanatory synthesis essays in this course.It will frequently be helpful for your readers if you provide at least partial summaries of sources in your synthesis essays.However, at times your argumentative synthesis essays will include sections that are explanatory in nature.

786 words (2.0 pages)
Synthesis and Anticancer Activities of 5-halogeno Pyrimidine

Microwave- assisted synthesis has been applied in many formats ranging from traditional solution phase to solid phase and solvent free reactions.have made the solvent and catalyst-free synthesis of dihydropyrimidione in one pot conditions under focused microwave irradiation in 2008. .Kidwai and Rastogi reported an eco friendly approach for the synthesis of 2 substituted-4-6-diarylpyrimidines using inorganic solid supports for its catalytic roleas well as energy transfer medium is described.The methodology eliminates the usage of solvents during reaction.Microwave assisted basic alumina catalysed reaction is the best as a catalysis as well as reaction time and yield.Solid state microwaves assisted organic synthesis have an impact on drug ...

1443 words (3.6 pages)
Synthesis of API’s and API’s based Derivative

This project concern with the establishment of organic synthesis facilities in Department of Chemistry, UNIVERSITY OF KARACHI.The synthesis of API could decrease the import bill of such active ingredient in Pakistan and also opens the opportunity of job.Ours Efforts will be enabling to purpose the more efficient synthesis of complex molecules.The purpose of this project is to setup a laboratory which can design (Organic Synthesis) and synthesize (Organic Synthesis) the APIs for the local Pharmaceutical industry along with the establishment of the required facilities.Figure 2: Proposed Two-Step Synthesis route for Secnidazole .

900 words (2.3 pages)
Relationship Between Neoliberalism and Neorealism

Likewise, it is a belief of the neo-neo synthesis that economists and politicians are able to make predictions about the nature of the international environment by using these scientifically determined laws of economics and politics; the above model cannot allow for capricious economic and political events whose causes lie outside of scientific prediction (Lapid, 1989).Thus Ruggie came to define the opposite to the neo-neo synthesis, i.e., constructivism, with the following statement ‘ ’ (Ruggie 1998: p. 867).The neo-neo synthesis, according to Ashley, Campbell and others of the deconstructionist school cannot properly exist in the form it pretends to because it does not take sufficient account of the anarchical element in international...

1725 words (4.3 pages)
Writing a Synthesis

The guiding ideas of the paper—the thesis statement at the end of the first paragraph and the corresponding topic sentences—are highlighted in gray.In this essay, the author found various sources on the same topic (the purposes of U.S. forces in Vietnam) and used certain parts of those sources to support the thesis statement.In order to write a successful synthesis essay, you must gather research on your chosen topic, discover meaningful connections throughout your research, and develop a unique and interesting argument or perspective.A synthesis is not a summary.The main purpose of a synthesis essay is to make insightful connections.

475 words (1.2 pages)
Intracellular Biosynthesis of Cadmium Sulfide Nanoparticles

Development of reliable and eco-friendly processes for synthesis of metallic nanoparticles is an important step in the field of application of nanotechnology.The optimum condition for synthesis of nanoparticles is temperature of 30ºC and pH of 9. .To obtain optimum conditions for maximum synthesis of nanoparticles and particle-size distribution, the obtained the optimum concentration of CdCl2 and Na2S was added to the supernatant and incubated at various temperatures (25–30 ºC) and pH conditions(5–11).Development of protocols for the synthesis of such semiconductors (the so-called quantum dots) is growing.The synthesis of nanoparticle circles around enzyme phytochelatin synthase, which exists in surface of .

2068 words (5.2 pages)
Chemical Synthesis of a Gene: Phosphodiester Approach

For synthesis of a gene, the oligonucleotides (about 30-60 nt long) are synthesized chemically so that each oligonucleotide has a 6-9 nt overlap with its neighboring oligonucleotide.In solid-phase synthesis, 3′-terminal hydroxy group of the first added nucleoside is attached to the solid surface by covalent interaction.(ii) Synthesis of the entire sequence of the DNA of interest: five to ten PCR products from the first step are combined and used as the template for a second PCR reaction using high-fidelity DNA polymerase pyrobest, with the two outermost oligonucleotides as primers.The solid support is contained in columns whose dimensions depend on the scale of synthesis.One such method called PAS (PCR-based accurate synthesis) involves ...

1979 words (4.9 pages)
Explanation of the Multistep Synthesis of Benzilic Acid Essay

During the conversion of benzoin to benzil, some benzoin may remain unoxidized.Take care when refluxing benzoin with nitric acid; the nitrogen dioxide fumes are extremely toxic and can cause lung damage.Benzil Synthesis .Prevent this scenario by creating a reaction of an ethanolic solution of the benzil with 10 percent sodium hydroxide solution; if benzoin is present, a purple color develops.Benzilic Acid Synthesis .

409 words (1.0 pages)
Lipase Catalysed Synthesis of Bio-based Reactive Polyester

IAn: SAn: diol were 2.5:2.5:5.0 and 1.4.0:5.0 taken for synthesis of polyester.The use of enzyme as a catalyst in polymer science is important methodology for the synthesis of novel polymeric structure, which are impossible or difficult to prepare.The present paper is about the lipase catalysed synthesis of bio-based reactive polyester employing itaconic anhydride as a renewable monomer.Title of the paper is Green polymer chemistry: lipase catalysed synthesis of bio-based reactive polyester employing itaconic anhydride as renewable monomer”.By looking at the title we can get clear idea that the experiment includes synthesis of biobased reactive polyester using itaconic anhydride as a renewable monomer and lipase as a natural catalyst.

2045 words (5.1 pages)
One-pot Synthesis of Porous Coordination Polymers

On the other hand, the use of various additives is an important synthesis approach for the fabrication of NMOFs materials with tunable morphology and size because the additives usually suppress nucleation and crystal growth during the reaction process.Oh reported that pyridine was added in the solvothermal synthesis of In-MIL-53 to manipulate the morphology of the microsized crystals.To date, many research efforts have been focused on the design, synthesis and applications of bulk MOFs materials; however, nanosized MOFs (NMOFs) materials have become increasingly interesting in the last decade because their microstructure, morphology and size also determine the properties and applications of NMOFs materials.Therefore, the design and syn...

1001 words (2.5 pages)
Protein Synthesis in DNA Processes

These are arranged along the appropriate codon on the mRNA during protein synthesis.There are three types of RNA found in cells, all of which are involved in process of protein synthesis.The formed polypeptides are then assembled into proteins and by this action, protein synthesis is complete.There are four stages in the formation of the proteins, these are: synthesis of amino acids; transcription; amino acid activation and translation.The first stage, the synthesis of amino acids, is concerned with the formation of amino acids.

1676 words (4.2 pages)
Synthesis of Carbon Nanotubes at Low Temperatures Using Single Heating Source of Catalyst and Reactor in the Floating Catalyst Chemical Vapor Depositi

Carbon, 44, 2265-2272.Shyu, Y., Hong, F. (2001).Materials Chemistry and Physics, 72, 223-227.Among all synthesis methods, chemical vapor deposition (CVD) is widely used to due to its efficient cost and low operating temperatures required (Shyu et al.,2001; Han et al., 2003; Ni et al., 2006).Many methods for the synthesis of CNTs have been used and developed (Ajayan, 1992; Ishigami et al., 2000; Lee et al., 2002).

398 words (1.0 pages)
Style Guide and Essay

I will post a SafeAssign link in next week’s lesson though which you can submit your final draft.You should keep in mind that this is a more formal essay than the journalistic style of the place profile, and thus should be more tightly organized with an introduction, topic sentence to introduce paragraphs, at least three supporting evidence paragraphs, and a conclusion.A successful essay of this type should include a thesis statement (your opinion of Abbey’s use of .You should use these two sources to support your .some theme or topic) and supporting textual evidence (discussions of moments in the Desert Solitaire where Abbey uses this theme or topic).

3493 words (8.7 pages)
Mechanisms of Rapamycin Production Discrepancy

In fact, both isoleucine and valine are the precursor of methylmalonyl-CoA [22, 24]which is a key node of the carbon flux switches from the primary branch into the secondary metabolic branch [29, 33] such asrapamycin[19].Therefore, more isoleucine and valine in mutant strain might be used to supply methylmalonyl–CoA for rapamycin synthesis.As analyzedabove, methylmalonyl-CoA is a key node for improving rapamycin production, while valine and isoleucine metabolism are key metabolic modules related to rapamycin synthesis.In addition, the result indicated the shortage of valine, glutamate, isoleucine, and ornithine in the synthesis of rapamycin (Fig.Thereby, it was confirmed that amino acids metabolic modules were closely associated with ra...

1640 words (4.1 pages)
Effects of Light and Cell Cycle on Expression Level of EChR1

In sum, more amino acids were used to supply precursors of rapamycin synthesis in the mutant strain, compared to that in the wild-type.In fact, both isoleucine and valine are the precursor of methylmalonyl-CoA [22, 24]which is a key node of the carbon flux switches from the primary branch into the secondary metabolic branch [29, 33] such asrapamycin[19].Therefore, more isoleucine and valine in mutant strain might be used to supply methylmalonyl–CoA for rapamycin synthesis.Thereby, it was confirmed that amino acids metabolic modules were closely associated with rapamycin synthesis indeed and the closest correlation was observed between lysine and rapamycin production.. .In fact, amino acids are essential parts of carbon and nitrogen meta...

1619 words (4.0 pages)
Erythryloxum coca Essay

PICTET’S SYNTHESIS: Pictet’s classical synthesis involves two steps at high temperatures, one of which is a rearrangement.However, a second synthesis by Spi??The laboratory synthesis of an alkaloid can be a challenging problem.A simple synthesis can provide an alternative supply of such a drug.tter worked on a tortuous synthesis (of about 20 steps) of tropinone between 1900 and 1903, but in 1917 Robinson reported his ‘one-pot’ synthesis and also provided what was probably the first example of a formal retrosynthetic analysis.

1927 words (4.8 pages)
Synthesis of Carbon Nanotubes at Low Temperatures Using Single Heating Source of Catalyst and Reactor in the Floating Catalyst Chemical Vapor Depositi

Many methods for the synthesis of CNTs have been used and developed (Ajayan, 1992; Ishigami et al., 2000; Lee et al., 2002).Low-temperature growth and field emission of aligned carbon nanotubes by chemical vapor deposition.Keywords Carbon nanotubes; Floating catalyst; Single heating source; low synthesis temperature Introduction: Since their first discovery in 1991 (Iijima, 1991), carbon nanotubes have attracted much attention due to their nanoscale dimensions and promising shape as well as their potential properties.Shyu, Y., Hong, F. (2001).Among all synthesis methods, chemical vapor deposition (CVD) is widely used due to its efficient cost and low operating temperatures required (Shyu et al.,2001; Han et al., 2003; Ni et al., 2006).<...

391 words (1.0 pages)
Diketo Analogues and Their Significance

Desai Akshay reported the synthesis of 2-thiophene-2- ethylthioureido-4- morpholino-6-( ureido-s-triazines.(18-23) These analogs were evaluated for their antimicrobial activity using .The 6-methyl-2-phenyl-3-(substituted)-3H-thieno[3,2-d] pyrimidin-4-ones (35-38) has been reported by Chander Mohan and evaluated for antimicrobial activity by using compared with standard drug Ciprofloxacin.Shiradkar M. reported synthesis of N-[3-(substituted)-7H- [1,2,4] triazolo [3,4-b] [1,3,4] thiadiazine / thiadiazol-4,5,6,7- tetrahydrobenzo[b] thiophenes (25-32) as good antimicrobial agents by using .Mosharef Hossain reported synthesis of thieno[3,2-e] imidazo[1,2-c] pyrimidin-2(3H)ones (39) which was evaluated for antimicrobial activity against...

769 words (1.9 pages)
Carbon Nonmaterial From Non-renewable Oil Resource Synthesis

The third objective of the project is to optimize the CNTs synthesis parameters such as; temperature, flow rate, precursor type used, and catalysis type.This makes the optimization process for synthesis of CNTs from non renewable precursors highly demanding.Synthesis process has been carried out at temperature of 500 and 570 °C for precursor and CNTs synthesis, respectively, a ferrocene catalyst concentration was 17.99 wt%.Synthesis of Highly Dispersed Single Walled Carbon Nanotubes from Furnace Oil and Light Diesel Oil by Modified Chemical Vapour Deposition Method.In this search a locally reactor has been designed for the synthesis and collection of soot from the petroleum material.

1713 words (4.3 pages)
The prokaryote cell Essay

The nucleus  in eukaryotic cells is separated from the cytoplasm by a nuclear envelope (nuclear membrane).Membranes also contain enzymes involved in many metabolic processes such as cell wall synthesis, septum formation, membrane synthesis, DNA replication, CO2 fixation and ammonia oxidation .Inside the nucleus is a fluid called nucleoplasm, a nucleolus  and linear chromosomes composed of negatively charged DNA associated with positively charged basic proteins called histones to form structures known as nucleosomes.ER with ribosomes attached is called rough endoplasmic reticulum and is involved in protein synthesis, production of new membrane, modification of newly formed proteins, and transport of these proteins and membrane to other ...

593 words (1.5 pages)

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