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Catalysis Reviews-2012 Volume 54 Issue 3
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Catalysis Reviews 作为催化领域权威的综述合集,第三期为a）利用光催化来进行脱硫；b）气相中汞的吸附；c)涉及尼古丁酸的催化氧化及机理。主要内容如下： Desulfurization of Real and Model Liquid Fuels Using Light: Photocatalysis and Photochemistry Abstract: Ultra-deep desulfurization of liquid fuels is crucial for the environment, longer lifetime of combustion engines, and emerging “green,” sustainable, carbon-neutral fuels for fuel cell applications. Current interest is towards photocatalysis and photochemistry for production of clean fuels and valuable chemicals. This critical Review provides systematization and analysis of studies on photocatalytic, photosensitized, and photochemical desulfurization of liquid fuels in the recent approximately 20 years. Zeolites, single-site photocatalysts, TiO2, and photosensitizers are discussed with their characterization and photocatalytic, photosensitized, and photochemical reaction networks. Pilot-scale photoreactors, kinetics of fuel desulfurization using sunlight, and uses of by-products of photodesulfurization of liquid fuels are covered (181 references). ----------------------------------------------------------------------------------- Abatement of Gas-Phase Mercury—Recent Developments Abstract: Among various pollutants, mercury has a significant impact on the environment, human beings, and wildlife with its different forms, namely, elemental mercury (Hg0), oxidized mercury (Hg2+), and particle-bound mercury (Hgp). Mercury dispersions mainly occur from coal burning, which is the world's major energy source. Among the three forms, Hg2+ and Hgp are relatively easy to remove from the flue gas by employing typical air pollution control devices; on the other hand, Hg0 is difficult to remove. Various methods are available to detain elemental mercury. Recent developments in mercury removal options, especially during the last years, are reviewed. Main concentration has been focused on the removal methods of elemental mercury by novel sorbents and catalytic systems. A current challenge is to develop novel nanomaterials meeting rigorous requirements (easy separation, recyclability, and cost-effectiveness) for eventual exploitation. ---------------------------------------------------------------------------------- Gas Phase Catalytic Oxidation of β-Picoline to Nicotinic Acid: Catalysts, Mechanism and Reaction Kinetics Abstract: An overview of the fundamental studies on a new method of nicotinic acid synthesis by the gas phase catalytic oxidation of β-picoline by oxygen is presented. The nature of active component in vanadia catalysts and reactivity of vanadium species are considered. Common features and differences in the mechanistic steps of nicotinic acid formation on various catalysts investigated by in situ FTIR spectroscopy are discussed. Effects of the reaction mixture components on the yield of nicotinic acid are considered in detail. Attention is paid to the kinetic equations of β-picoline oxidation on vanadia-titania catalysts. 有需要的可以下载： download links: http://good.gd/2331650.htm http://pan.baidu.com/share/link?shareid=145420&uk=4113076280 论文附件为：[ Last edited by leiws on 2012-12-2 at 12:45 ] |
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