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environmental review of petroleum industry effluents analysis
environmental review of petroleum industry effluents analysis

... studied. These effluents include fugitive emissions, flue gases from process heaters, blowdown systems emissions and wastewaters. Fugitive emissions, one of the greatest sources of VOCs can be qualified and quantified by the average emission factor approach and reduced thanks to the implementation o ...


... mechanism for the electro-oxidation of formic acid at gold electrodes should include a distinct pH effect, as proposed earlier based upon results of (radio)electrochemical studies and on kinetic isotope effects [25]. The pH-dependence observed here for reaction at a Au electrode is essentially simil ...
When Gold Is Not Noble: Nanoscale Gold
When Gold Is Not Noble: Nanoscale Gold

... behavior pertains even after several reaction cycles up to temperatures of 350 K, indicating that the model catalyst is thermally stable. This is further supported by infrared studies, with the vibrational frequencies of 13CO adsorbed on Au8 (at 90 K before and after annealing to 350 K, and with no ...
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Mechanism and Processing Parameters Affecting the Formation of

... by GC-MS using direct liquid injection. Peaks corresponding to excess methanol, water and MMS were detected. Mass spectra confirmed the peak assignments. The positive EI mass spectrum of methyl methanesulfonate (MMS) showed the molecular ion at m/z 110, and the fragments at M-1 (m/z 109), M-15 (M-CH ...
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Now we turn to the study of chemical kinetics. Kinetics is the study of

... second factor is the concentrations of reactants and products. This should make qualitative sense. In order for two compounds to react, they have to meet. If the concentration of the reactants is higher, then they will be closer together, and it won't take as long for them to come together and react ...
Unit 5 Chemical Kinetics Section 5.1 Rates of Chemical Reaction
Unit 5 Chemical Kinetics Section 5.1 Rates of Chemical Reaction

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Role of Substrate Temperature on the Structural

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Catalytic decomposition of N2O over Rh/Zn–Al2O3 catalysts
Catalytic decomposition of N2O over Rh/Zn–Al2O3 catalysts

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Chemical Kinetics Mac 2011

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16 Chemical Equilibrium Chapter Outline Rates of Reaction

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chemical equilibrium
chemical equilibrium

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Catalysts Containing Depleted Uranium Compounds

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... easily and hence is more difficult to apply in a continuous process. Because of this practical difference, chemists have long made a distinction between heterogeneous catalysis (where a solid catalyst is involved) and homogeneous catalysis (involving other forms). As the molecular processes involved ...
Kinetics of Excited-State Ti(a5F)
Kinetics of Excited-State Ti(a5F)

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Size-Selective Hydrogenation of Olefins by Dendrimer
Size-Selective Hydrogenation of Olefins by Dendrimer

... were run at atmospheric pressure and room temperature (25 ( 2 °C). Hydrogenation Reactions. 50 mL of the catalytic solution and a magnetic stir bar were placed in a Schlenk flask. All of the joints of the apparatus were sealed with silicone grease and checked for leaks before adding the substrate. T ...
Polysulfane Antitumor Agents from o
Polysulfane Antitumor Agents from o

... Various heterocycles may be expected to arise from the reaction of o-benzyne with cyclic S8. B3LYP/6-31G(d) calculations are used to predict the stability of possible ortho-fused heterocycles, o-C6H4Sx (where x ) 1-8). Lowenergy conformers of the rings containing up to 8 sulfurs were identified by a ...
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Chlorine atom spin±orbit branching ratios and total

... distance) it could be shown that narrow `reactive valleys' in the contour plot of the BW2 PES centered at c  30° (which are not present in the G3 PES) are responsible for the higher reactivity of the abstraction pathway observed on the BW2 PES (see [10, Fig. 7]). 4. Summary and conclusion Cl atom s ...
Highly active oxygen reduction non-platinum group metal electrocatalyst without direct metal–nitrogen coordination
Highly active oxygen reduction non-platinum group metal electrocatalyst without direct metal–nitrogen coordination

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Industrial catalysts

The first time a catalyst was used in the industry was in 1746 by J. Roebuck in the manufacture of lead chamber sulfuric acid. Since then catalysts have been in use in a large portion of the chemical industry. In the start only pure components were used as catalysts, but after the year 1900 multicomponent catalysts were studied and are now commonly used in the industry today.In the chemical industry and industrial research, catalysis play an important role. Different catalysts are in constant development to fulfill economic, political and environmental demands. When using a catalyst it is possible to replace a polluting chemical reaction with a more environmentally friendly alternative. Today, and in the future, this can be vital for the chemical industry. In addition it’s important for a company/researcher to pay attention to market development. If a company’s catalyst is not continually improved, another company can make progress in research on that particular catalyst and gain market share. For a company, a new and improved catalyst can be a huge advantage for a competitive manufacturing cost. It’s extremely expensive for a company to shut down the plant because of an error in the catalyst, so the correct selection of a catalyst or a new improvement can be key to industrial success. To achieve the best understanding and development of a catalyst it is important that different special fields work together. These fields can be: organic chemistry, analytic chemistry, inorganic chemistry, chemical engineers and surface chemistry. The economics must also be taken into account. One of the issues that must be considered is if the company should use money on doing the catalyst research themselves or buy the technology from someone else. As the analytical tools are becoming more advanced, the catalysts used in the industry are improving. One example of an improvement can be to develop a catalyst with a longer lifetime than the previous version. Some of the advantages an improved catalyst gives, that affects people’s lives, are: cheaper and more effective fuel, new drugs and medications and new polymers. Some of the large chemical processes that use catalysis today are the production of methanol and ammonia. Both methanol and ammonia synthesis take advantage of the water-gas shift reaction and heterogeneous catalysis, while other chemical industries use homogenous catalysis. If the catalyst exists in the same phase as the reactants it is said to be homogenous; otherwise it is heterogeneous.
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