在NL原粉基础上,制备了具有一定稳定性的乙基化催化剂z937。
An ethylation catalyst Z937 with suitable stability were prepared on THD basis of NL.
乙基化的选择性则与催化剂的表面酸强度、酸性中心位置和孔道结构等因素有关。
Ethylation selectivity, was affected by strength of surface acid sites, location of acid sites and pore structure.
实验结果表明:本体系中相转移催化剂的催化效率是苄基三乙基氯化铵大于四丁基溴化铵和四乙基溴化铵;
The results show that catalytic efficiency of the phase transfer catalyst BETAC is higher than TBAB, and TBAB is nearly as efficient as TEBA.
制备了以超细二氧化硅为载体的氰乙基化可溶性蛋白质-钯催化剂,研究了它对三丁基锡氢化物和酰氯化合物偶联反应的催化活性。
Silica supported cyanoethylated soluble protein-Pd has been prepared and its catalytic activity in the cross-coupling reaction of tributyltin hydride and acid chlorides was studied.
四丁基溴化铵和四乙基溴化铵的催化效率相当;采用2克相转移催化剂的催化效率大于采用4克催化剂的催化效率;壬二酸的产率随高锰酸钾用量的增加而增加。
The effects of 2 g PTCs used are better than those of 4 g PTCs, and the yield of azelaic acid is raised as the amount of potassium permanganate increases.
椰油胺和环氧乙烷在羟乙基化低级脂肪胺存在下反应制得二羟乙基脂肪胺低倾点新型杀活剂。
A new deactivator with lower pour point was obtained by the reaction of coconut amine and ethylene oxide in the presence of 5% catalyst.
氮芥是非结构专一性抗肿瘤生物烷化剂,作用靶点主要是DNA,其中N,N-(2-氯乙基)氨基是抗肿瘤活性功能基。
Mustard of non-structural specificity disturbs the synthesis of DNA due to the active functional group of N, N-(2-chloroethyl) amino.
氮芥是非结构专一性抗肿瘤生物烷化剂,作用靶点主要是DNA,其中N,N-(2-氯乙基)氨基是抗肿瘤活性功能基。
Mustard of non-structural specificity disturbs the synthesis of DNA due to the active functional group of N, N-(2-chloroethyl) amino.
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