Engineering Chemistry

The objectives of this research work are: Study the clay intercalation by organic dye and develop a process to produce nanoclay-dye pigment with better stability and good performance; Conduct structural characterization to verify the level of intercalation and stability of clay-dye pigment by using X-Ray diffraction (XRD) and Transmission Electron Microscopy (TEM); Investigate the thermal stability of clay dye pigment using Thermo Gravimetric Analysis (TGA) to reveal the effect of dye intercalation into the clay on improving thermal stability of organic dye; Compound the clay- pigment with ...

141p runthenight07 01-03-2023 5 3   Download

The thesis is organised as follows: Chapter 1 comprises the literature review of protein structure, amyloid fibrils and of the effect of nanomaterials on protein aggregation. Chapter 2 reviews the computational methods used to perform simulations and analysis. Chapter 3 comprises my published article on benchmarking forcefields and sampling methods for disordered proteins using amylin as a case study. Chapter 4 comprises my published article on the effect of oxidation on the properties of graphene oxide flakes in solution.

56p runthenight04 02-02-2023 12 3   Download

The objective of the thesis is to build the synthesis process of Analogs of Bengamide A and E, conduct the biological activity of the synthesized Analogs. To find out more about the details of the content, please consult the thesis summary.

27p xacxuoc4321 11-07-2019 31 3   Download

Chemical reaction engineering (reaction engineering or reactor engineering) is a specialty in chemical engineering or industrial chemistry dealing with chemical reactors. Frequently the term relates specifically to catalytic reaction systems where either a homogeneous or heterogeneous catalyst is present in the reactor.

146p 61204392 22-10-2014 80 15   Download

Ph.D. dissertation Science Education: Developing innovative capacity for independent college students through teaching techniques of organic chemistry research applied several measures PPDH active in organic chemistry DH to develop independent innovation capacity of students, contributing to improving the quality of practical chemistry in particular DH and enhance the effectiveness of training in engineering universities in general.

31p nganhanggddt2014 01-07-2014 92 7   Download

The effects of addition of alumina to the matrices of cracking catalysts containing different types of zeolite Y, on their cracking performance, were investigated using a micro activity test and two different feed oils.

13p tuananhhumg 04-11-2013 50 3   Download

Division of Medicinal and Natural Products Chemistry, Department of Chemistry and Department of Chemical Engineering, University of Iowa, USA; 2Department of Autoimmunology, Statens Serum Institut, Copenhagen, Denmark Synthetic peptides based on amino-acid residues 27–38 of human serum amyloid P component represent a novel type of heparin binders as they do not contain clusters of basic amino acids or other known features associated with protein or peptide heparin binding.

8p system191 01-06-2013 53 4   Download

Molecular identification of adrenal inner zone antigen as a heme-binding protein Li Min1*, Natallia V. Strushkevich1,2*, Ivan N. Harnastai2, Hiroko Iwamoto3, Andrei A. Gilep1,2, Hiroshi Takemori1, Sergey A. Usanov2, Yasuki Nonaka3, Hiroshi Hori4, Gavin P.

12p dell39 27-03-2013 53 6   Download

Standards for standardization of reducing agents: K2Cr2O7 KIO3 Ce4+ Standards for standardization of oxidizing agents: Na2C2O4 Na2S2O3 Fe2+ (Mohr’s salt and Oesper’s salt) 4 .V. Auxiliary Oxidizing and Reducing Agents The analyte must be in a single oxidation state at the start of the titration. This can be achieved by using a preoxidation or pre-reduction step prior to analysis

25p doilan 26-01-2013 50 4   Download

Oxidation/Reduction Reactions Reactions in which electrons are transferred from one reactant to another. Example I-1 Cu2+ + Zn (s) Cu (s) + Zn2+ Cu2+ has undergone reduction and is reduced. Oxidizing reagent: Cu2+. Reducing agent: Zn. Zn has undergone oxidation and is oxidized. .

91p doilan 26-01-2013 66 10   Download

Coordinate covalent bonds: a bond formed when both electrons of the bond are donated by one atom. [H3N: Ag :NH3]+ Ag+ + 2(:NH3) Electron configuration of Ag [Kr]4d105s15P0 Ag+ [Kr]4d105s0 5P0 Sp hybrid orbitals: accommodate 2 pairs of electrons. Linear Complex ion: A metal ion with Lewis base attached to it through coordinate covalent bond. Complex (Coordinate compound): a compound consisting either of complex ions and other ions of opposite charge or of neutral complex species.

49p doilan 26-01-2013 68 7   Download

Treating Complex Acid-Base Systems Complex systems are defined as solutions made up of: 1) Two acids or bases of different strengths HCl + CH3COOH NaOH + CH3COO2) An acid or base that has two or more acidic protons or basic functional groups H3PO4 Ca(OH)2 .3) An amphiprotic substance that is capable of acting as both acid and base HCO3- + H2O CO32- + H3O+ HCO3- + H2O H2CO3 + OHNH3+CH2COO- + H2O NH2CH2COO- + H3O+ NH3+CH2COO- + H2O NH3+CH2COOH + OH- .

46p doilan 26-01-2013 79 7   Download

Solutions and Indicators for Neutralization Titrations A. Standard Solutions: The standards solutions used as titrants for unknown w eak acids or bases are alw ays strong bases or acids, respectively. Standard titrant acids: dilute solutions of HCl, HClO 4 , or H 2 SO 4 . Standard titrant bases: dilute solutions of NaOH, KOH. The primary standards may not be strong acids or bases (e.g., potassium acid phthalate, sodium oxalate, sodium bicarbonate).

43p doilan 26-01-2013 68 7   Download

individual species Determining which species are present Reactions Equations Assumption Steps in Figure 9-1 .A Systematic Method .

39p doilan 26-01-2013 36 4   Download

The concentrations and charge strength of "spectator“ or non-reacting electrolytes The tendency to form precipitates will be decreased with increasing ionic strength 1) interactions (but not necessarily reactions) of the reactant species with other charged species 2) interactions of the charged product species with the spectator ions. H2O + H2CO3 H3O+ + HCO3Ka1 increases with increasing ionic strength, so the solution becomes more acidic.

36p doilan 26-01-2013 47 6   Download

Titrimetry refers to that group of analytical techniques which takes advantage of titers or concentrations of solutions. The word "titer" is also used to denote "equivalence" or that amount of a solution required to complete a chemical reaction. Titrimetry often refers to the use of some volume of a solution of known concentration to determine the quantity of an analyte. But there are some variations on the use of the term.

66p doilan 26-01-2013 64 6   Download

Electrolytes: solutes which carry electrical charge - these compounds are at least partially ionized 1. Strong Electrolytes = solutes almost completely ionized 2. Weak Electrolytes = solutes only partially ionized .Acids and Bases - electrolytes (can be weak or strong) 1. Bronsted-Lowery Theory: acids are proton donors bases are proton acceptors 2. Strong Acids and bases almost completely ionized 3. Weak acids and bases (poorly ionized). See Table 6-2 (memorize strong acids and bases)

33p doilan 26-01-2013 38 5   Download

Establishing confidence limits for a mean of a set of replicate data Determining the number of replications Determining at a given probability whether an experimental mean is at the acceptable range Determining at a given prob.Term & Definition Confidence Limit (CL): define an interval around mean ( x ) that probably contains population mean (μ). ...

36p doilan 26-01-2013 41 4   Download

Data of unknown quality are useless! All laboratory measurements contain experimental error. It is necessary to determine the magnitude of the accuracy and reliability in your measurements. Then you can make a judgment about their usefulness. Replicates - two or more determinations on the same sample Example 3-1: One student measures Fe (III) concentrations six times. The results are listed below: 19.4, 19.5, 19. 6, 19.8, 20.1, 20.3 ppm (parts per million) 6 replicates = 6 measurements The "middle" or "central" value for a group of results: Mean: average or arithmetic mean ...

67p doilan 26-01-2013 55 6   Download

Tham khảo bài thuyết trình 'analytical chemistry', khoa học tự nhiên, hoá học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

61p doilan 26-01-2013 79 9   Download