The weight method is used to measure the solid quantity (catalyst contain) in slurry oil of catalytic cracking unit.
采用重量法测定催化装置油浆中的固体含量(催化剂含量)。
As the improvement of the invention, the raw material of the plastic membrane also comprises 10 to 25 weight portions of metallocene catalyst for liner low density polyethylene.
作为本发明的改进，所述塑料薄膜的原料还包括按重量计的10 ~25份用于线性低密度聚乙烯的茂金属催化剂。
The catalyst has excellent anti-metal performance when being used in heavy oil cracking reaction, and can increase the weight ratio of liquefied gas, gasoline and diesel fuel in the product.
本发明的催化剂在用于重油裂化反应中时具有优秀的抗金属性能，且能够提高产物中液化气、汽油和柴油的重量比。
This paper introduces the synthesis of the high molecular weight polyether by using metalloporphyrin complex catalyst system.
介绍了用四苯基卟啉铝络合物催化体系合成高分子量聚醚的方法。
The ratio of catalyst to initiator concentration will improve the rate, however, it do not increase of molecular weight, obviously.
增加催化剂与引发剂的浓度之比可以提高反应速率，但对分子量的提高不明显。
The influences of catalyst concentration and aging temperature, polymerization time and temperature on molecular weight of the polymers were studied.
研究了催化剂浓度、聚合时间、真空度、聚合温度和陈化温度等对聚合收率和聚合物粘均分子量的影响。
This is the lowest catalyst loading that has been achieved so far in enamine catalysis with low molecular weight catalysts for a broad range of substrates.
这一催化载量，在已知的烯胺小分子催化剂中，是最低的，且底物广泛。
Production capacity of unit weight catalyst for the novel catalytic column reactor is 4.23 times higher than that for a bubble fixed bed reactor.
从单位体积反应器生产能力进行比较，新型催化剂装填方式是固定床鼓泡反应器的4倍以上。
The metallocene polyethylene with a relative molecular weight distribution higher than 4 could be obtained by using the combined catalyst having 1 : 1 molar ratio of APE-1/APE-2.
高压聚合试验中 负载型APE-1和APE-2催化剂按照摩尔 比1：1复配，可以得到相对分子质量分布大于4的茂金属聚乙烯。
And the effects of kind of catalyst and polymerization condition on the preparation of low molecular weight lactic acid polymer were investigated.
研究探讨了催化剂种类及其用量、反应温度和时间等聚合条件对低分子量聚乳酸分子量的影响。
The utility model has the advantages of small size, light weight and is suitable for the extrusion molding of the stuff with powder form or pasty form of catalyst, desiccant, adsorbent, foods, etc.
本实用新型的挤条机体积小、重量轻，适用于催化剂、干燥剂、吸附剂、食品等粉末状或糊状物料的挤压成型。
Also provided is a process for narrowing the molecular weight distribution of a polyolefin comprising contacting an olefin, a Ziegler-Natta catalyst and a compound specified herein.
还提供了一种使聚烯烃分子量分布变窄的方法，包括使烯烃、辛格勒·纳塔型催化剂和本文指定化合物相接触。
The effects of the different rare earth in catalyst on catalytic activity and molecular weight of copolymer were studied.
考察不同稀土元素对组成的催化剂活性和共聚物分子量的影响。
This invention relates to a new duplex metal cyanide catalyst (DMC) used in synthesizing polyether polyol with high molecular weight and low degree of unsaturation and method for making same.
本发明主要涉及一种用于合成高分子量低不饱和度聚醚多元醇的新型双金属氰化物催化剂(DMC)及其制备方法。
It was found that loop reactor could narrow the molecular weight distribution, increase the content of carbonate in product molecules and improve catalyst efficiency.
研究发现，环流反应器能够使产品分子量分布变窄，提高产品中碳酸酯基团含量及催化剂的催化效率。
A kind of hydrocarbon-oil desulfuration agent contains, on the catalyst-weight basis, 15-60% phosphorus-modified and rare-earth-contained Y type zeolite, 10-60% inorganic oxide, and 0-75% clay;
一种降低汽油中的硫含量的脱硫剂含有以催化剂重量为基准的含稀土Y型沸石15-60重％、无机氧化物10-60重％、粘土0-75重％；
A kind of hydrocarbon-oil desulfuration agent contains, on the catalyst-weight basis, 15-60% phosphorus-modified and rare-earth-contained Y type zeolite, 10-60% inorganic oxide, and 0-75% clay;
一种降低汽油中的硫含量的脱硫剂含有以催化剂重量为基准的含稀土Y型沸石15-60重％、无机氧化物10-60重％、粘土0-75重％；
应用推荐