Fluidized bed processing was first used commercially in fluid catalytic cracking of crude oil in 1941 . 早在1941年，流化床工艺过程就第一次以工业规模用于原油的流化催化裂化。
Thrombin is an enzyme that catalyzes the conversion of the soluble plasma protein fibrinogen to the insoluble protein fibrin . 凝血酶能催化可溶性血浆纤维蛋白转化为不溶性的纤维蛋白。
Many reactions can be catalyzed in more than one way, and in some cases both homogeneously and heterogeneously . 许多反应可以经多种途径进行催化，并且在若干情况下均相和多相的催化都可以。
The hydrogenation of olefins affords an example where both heterogeneous and homogeneous catalyses are effective . 烯烃的加氢反应就是这样的一个例子，对它说来均相催化和多相催化都是有效的。
Conversion and selectivity of catalytic reactions as well as the deactivation rate of the catalyst itself is very temperature-sensitive . 催化反应的转化率和选择性以及催化剂本身的失活速率均对温度十分敏感。
For noncatalytic operations at high temperature the agglomeration and sintering of fine particles can necessitate a lowering in temperature of operation . 对于一些高温非催化操作，由于微粒易于聚集和烧结，不得不降低操作温度。
One particular feature of the fluidized bed, its remarkable temperature uniformity, has recommended it as a vehicle for effecting catalytic reactions . 流化床的一个特殊的性能，即其温度非常均一，使它成为进行催化反应的一个工具。
Essentially the catalytic properties of clay minerals arise because of their ability to donate protons or accept electrons in reaction mechanisms . 从本质上看，粘土矿物具有催化性质，这是因为粘土矿物在反应过程中能放出质子或接受电子。
Preparation of nanometer tio2 photocatalytic films 纳米二氧化钛光催化薄膜的研制
Effects of la2o3 doping on the photocatalytic activity of tio 2光催化性能的影响
