综述了异羟肟酸类化合物的合成及其近年来在催化氧化和高选择性络合金属离子的应用研究新进展。
This article reviews the synthesis of hydroxamic acid, and its new applications in the fields of catalytic oxidation as well as highly selective complexation with metal ions.
我们还发现，在催化氧化环境中连续使用的钼酸铋粒径会越来越长，对丙烯醛的选择性会相应提高。
The poor acrolein selectivity of this catalyst was improved by continuous use in the catalytic oxidation for making the particle size of the dispersed bismuth molybdate larger.
研究了SAS型固体酸和几种分子筛上氧化苯乙烯液相重排成苯乙醛的反应，考察了催化剂的活性、选择性和和稳定性。
The method of liquid phase rearrangement of styrene oxide to phenylacetaldehyde catalyzed by SAStype solid acids and molecular sieves was studied.
综述了催化还原法消除氮氧化物研究现状、发展趋势及反应机理，特别是对烃类选择性催化还原氮氧化物过程进行了说明。
The catalytic reduction of NO_x was reviewed with the emphasis on the progress of studies, developing trend and the reaction mechanisms of the selective reduction of NO_x with hydrocarbons.
氨选择性催化还原(SCR)氮氧化物是唯一工业化的烟气脱硝技术。
Ammonia selective catalytic reduction (SCR) of nitrogen oxide is the only industrialized flue gas DeNOx technology.
以丙酮为溶剂，30％H2O2为氧化剂，两种体系催化苯甲硫醚氧化反应分别可以循环使用两次和三次，但产物亚砜的对映选择性很低。
The two catalytic systems can be recycled twice and three times, respectively, with very low enantioselectivities for the oxidation of phenyl methyl sulfide with 30% H2O2 as oxidant in acetone.
在乙烯氧化制环氧乙烷过程中，保持银催化剂的高选择性是发挥装置最好效益的行之有效的方法。
In the oxidation process for manufacturing ethylene oxide, maintaining the high selectivity of the silver catalyst is essential to obtaining the best efficiency.
本文研究了凹凸棒石负载锰氧化物催化剂的物理化学性能和低温选择性催化还原NO性能。
This dissertation studied the activity of manganese oxides catalyst supported by palygorskite catalyst in lower temperatures for selective catalytic reduction of NO and its physic-chemical properties.
催化剂的加入可提高等离子体反应中污染物的脱除效率和二氧化碳的选择性，减少副产物的产生，并进一步降低能耗。
Catalyst could enhance pollutants removal efficiency and selectivity to carbon dioxide in the plasma reaction, inhibit by-products formation and lower energy consumption.
本发明提供的二氧化碳甲烷化催化剂在二氧化碳的甲烷化反应中显示出优越的活性和甲烷选择性。
The methanation catalyst of carbon dioxide in the invention shows superior activity and methane selectivity in the methanation reaction of the carbon dioxide.
本发明涉及“氨选择性催化还原氮氧化物成氮气的催化剂及其制备方法”，属于催化剂技术领域。
The invention relates to a 'catalyst used for ammonia selective catalytic reduction of nitrogen oxides to nitrogen gas and a preparation method thereof', and belongs to the catalyst technical filed.
以4甲基吡啶为原料，在固定床反应器中通过含氧化钒的催化剂发生气固相接触氨氧化反应制备雷米封中间体4氰基吡啶，4甲基吡啶的转化率为99%，4氰基吡啶的选择性为88%，收率为87。
4-cyanopyridine, intermediate of rimifon, was synthesized from 4-picoline using vanadium oxide as a catalyst in a fixed-bed reactor, reached 99% conversion of 4-picoline, 88% selectivity and 87.
该催化体系催化的烃类分子氧氧化反应具有反应条件温和、选择性高等优点。
Using this catalytic system, the oxidation reactions proceed under mild conditions and give both high conversions and selectivities.
长期以来，人们致力于通过调变催化剂的组成、结构和优化反应条件来改善催化氧化的选择性，但氧化选择性差的缺点一直是该类反应的难题。
Since long-term, great efforts have been made in improving the catalytic selectivity by altering the composition and structure of catalysts and adopting the optimum catalytic reaction conditions.
长期以来，人们致力于通过调变催化剂的组成、结构和优化反应条件来改善催化氧化的选择性，但氧化选择性差的缺点一直是该类反应的难题。
Since long-term, great efforts have been made in improving the catalytic selectivity by altering the composition and structure of catalysts and adopting the optimum catalytic reaction conditions.
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