对氧化催化转化器(DOC)和柴油机颗粒过滤器(DPF)进行了性能试验研究。
An experimental study on the performances of diesel oxidation catalyst (DOC) and diesel particulate filter (DPF) is conducted.
该系统的核心是一个特殊的催化转化器催化剂的氧化和下游的微粒过滤器。
The heart of the system is a special catalytic converter downstream of the oxidizing catalyst and the particulate filter.
最初的转化器叫做常规氧化催化器。
The first catalytic converters were called conventional oxidation catalysts.
他们使用催化转化器，将二氧化碳和氢转变为液态燃料。
Then, using a catalytic converter, they transformed them into a fuel by a gas-to-liquids process.
由于大量使用催化转化器将汽车尾气转换成二氧化碳，城市中的一氧化碳含量已经大大减少。
Carbon monoxide levels in cities have been greatly reduced by the use of catalytic converters in cars, which turn most of the gas into carbon dioxide.
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.
根据SO_2液相催化氧化机理，在转化器末段设置两个并联的催化剂床，周期性地通过转化气体和干燥空气。
According to the mechanism of liquid phase catalytic oxidation, the converted gas and the dry air are passed through alternatively the two parallel beds located at the final stage of converter.
根据SO_2液相催化氧化机理，在转化器末段设置两个并联的催化剂床，周期性地通过转化气体和干燥空气。
According to the mechanism of liquid phase catalytic oxidation, the converted gas and the dry air are passed through alternatively the two parallel beds located at the final stage of converter.
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