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Lower temperature,lower effecitve alkali charge and shorter time resulted in a pulp with lower HexA content and higher screened yield.

较低的蒸煮温度、较低的有效碱用量和较短的保温时间有利于降低纸浆中己烯糖醛酸的含量,且纸浆的细浆得率也较高。

Hexene ; hydroformylation ; rhodium ; supported catalyst ; organic phosphine ; organic-inorganic hybrid

己烯;氢甲酰化;铑;负载型催化剂;有机膦;有机-无机杂化

A novel non - metallocene supported catalyst, CpTiCl2/MgCl2 - SiO2/ MAO ,was prepared, and the catalysis involved in ethylene homo - polymerization, ethylene - 1 - hexylene and ethylene - styrene copolymerization was investigated.

研究开发了一种新型非茂负载聚烯烃催化剂——CpTiCl2/MgCl2-SiO2/MAO,并考察了该催化剂的乙烯均聚、乙烯和1-己烯共聚及乙烯和苯乙烯共聚性能。

The DES is a small molecule and is not immunogenetic,so it must be synthesized firstly.

国内外研究表明,己烯雌酚可以破坏机体遗传物质,导致基因突变而引发机体肿瘤[1]。

The results showed that at the concentration of 10-8 mol/L,diethylstilbestrol facilitated fetal rat mesencephalic NSCs proliferation and differentiation, and increased neuronal differentiation.

结果显示:己烯雌酚浓度在10-8mol/L时中脑NSCs增殖、分化明显,并能提高神经元的分化率。

Catalysts 1 and 2 were supported on silica particles and the effects of different supporting strategies on trimerization selectivity, 1-hexene incorporation efficiency and copolymerization activity were studied and compared to the homogeneous system.

使用均相或负载化HNC_2H_4SC_(12H_(25)_2·CrCl_3与均相或负载化Et_2ZrCl_2组合成的不同的串联催化体系进行乙烯的化学反应,研究发现,共聚催化剂Et_2ZrCl_2负载化对其活性和1-己烯的插入都有影响。

Then identified and passaged cells and induced to differentiation 5 days later.

实验分空白对照组和己烯雌酚组(浓度分别为10-9、10-8、10-7mol/L)。

SEM showed that the trabecular bone widened, its broken points lessened and its Howship's lacunae shallowed in the groups after treatment.

扫描电镜显示,ALN组及己烯雌酚组治疗后骨小梁宽度增加,断点减少,Howship陷窝变浅。

This paper mainly studies the synthesis of 2-Isopropyl-5-Methyl-2-Hexenal from the optimum reaction conditions of from self aldol condensation of Isovaleraldehy,with NaOH solution as the catalyst of the condensation.

本文以NaOH水溶液为催化剂,探讨了异戊醛Aldol缩合制备可可醛(2异丙基5甲基2己烯醛)的最佳反应条件:反应温度50℃、反应时间9h、催化剂NaOH水溶液的浓度2mol.L1、OH-/异戊醛为1/1,主产物可可醛的产率为92.2%。

Thus, cyclohexene species can desorb quickly from the active sites, avoiding its deep oxidation dehydrogenation.

催化剂的表面上,使催化剂表面形成孤立的活性中心,避免了产物环己烯的深度氧化。

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