查询词典 catalyst

The said process can regenerate catalyst continuously or intermittently to maintain the catalytic activity of the alkylating catalyst for long period and has lowest loss of produce in amount and octane number while eliminating the thiofuran sulfur impurity in material.

采用该方法可对催化剂连续或间歇再生，克服烷基化催化剂一般寿命短的缺陷，并且可以长时间维持烷基化催化剂的活性；在脱除原料中噻吩类杂质硫的同时使得产品量损失最小及产品辛烷值损失最少。

Based on this core/shell H-beta zeolite capsule catalyst, a novel palladium painted zeolite capsule catalyst with tripart core/shell/paint structure was prepared.

基于该沸石胶囊催化剂，通过沸石胶囊担载钯方法制备了另一种具有Core/Shell/Paint三分结构的新颖沸石胶囊催化剂。

Based on this core／shell Hbeta zeolite capsule catalyst, a novel palladium painted zeolite capsule catalyst with tripart core／shell／paint structure was prepared.

基于该沸石胶囊催化剂，通过沸石胶囊担载钯方法制备了另一种具有 Core／Shell／Paint 三分结构的新颖沸石胶囊催化剂。

Study on technics of synthesize dimethyl fumaricate, firstly prefabricated fumaric acid, with furfural as raw material, V2O5 as catalyst and potassium chlorate as oxidizer then synthesized dimethyl fumaricate through esterication of fumaric acid and methanol with phosphor tungstenic acid as catalyst.

研究了以糠醛为原料，V2O5作催化剂，用氯酸钾氧化制取富马酸，然后以磷钨酸为催化剂，用甲醇进行酯化合成富马酸二甲酯的合成工艺。

The Mo-In/HZSM-5 catalyst exhibits better catalytic performance compared to unpromoted Mo/HZSM-5 catalyst.

为了进一步改善催化剂的催化性能，本文重点研究助剂In、Pd对Mo／HZSM-5催化剂的改性作用。

A catalyst for decomposing an organic halide, characterized as comprising a water-insoluble vanadyl sulfate or as being a composite catalyst comprising the vanadyl sulfate and a specific oxide and a specific sulfate.

一种分解有机卤化物的催化剂，其特征在于包括水不溶的硫酸氧钒或者是包括硫酸氧钒和一种特定的氧化物和一种特定的硫酸盐的复合催化剂。

By a series of the characterization on its textural properties and reactivity, we have found that the zeolitic shell in the catalyst could effectively prevent the soluble palladium species from being leached into the reaction solution because of the special molecular sieving effect of the zeolitic shell, endowing the catalyst with high reusability.

然而，对很多的贵金属参与的工业反应而言，由于反应物原料本身含有痕量的含硫或含氮的化合物，在反应过程中，这些杂环化合物分子与贵金属的强相互作用导致了贵金属活性中心被覆盖而失活，造成催化剂的中毒。

The recycling of separative mother liquor as the source of feeding ammonia and feeding water, and repetitious regeneration of coked catalyst by the high-temperature calcination for four times seem to have no obvious influence on the activity, selectivity and durability of TEDAMAX-01 catalyst.

对将分离母液循环作为进料氨源和水源的反应，以及催化剂经过反复4次高温焙烧再生之后的反应进行了评价，该催化剂都表现出同样高的活性、选择性和稳定性。

In commercial units, increasing C/O ratio can compensate the active loss of coked catalyst. Therefore, maximum profit can be obtained by control optimal residual coke content in the catalyst.

在实际工场再生触媒因残碳存在，使活性降低，可藉提高C/O比率来弥补；因此在不完全燃烧的再生模式下，控制适当的焦碳含量，有益於整体操作效益。

In preparation of motor fuel, the bio-oil from pyrolysis of biomass must be further upgraded so as to improve its quality. However the catalyst used in the cracking reaction is easy to lose its activity due to being coked, so that it is important to study the coke formation and its effects on the catalyst activity in the cracking process.

为了获得高质量生物质燃料油，需要对生物质直接裂解得到的生物质油进行催化裂解精制：精制过程中催化剂容易结焦，对精制反应产生很大影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。