查询词典 hydrogenolysis

Nevertheless, due to the increase of the surface area and activity, the possibility of hydrogenolysis also increases so that more chloroform are generated with the use of nano-scale particles than with the micro-scale particles.

然而由於尺寸缩小，反应活性亦加大，奈米锡在水中对氢离子的竞争性提升，因此加强了氢解反应的发生机率，造成奈米化金属系统三氯甲烷的产率较粉末状金属系统高出许多。

Hydrogenolysis results show that the activity and selectivity of methanol produced from synthesis gas are smaller than those from pure H2.With increasing reaction temperature,the activity of methanol synthesis increases gradually,with simultaneously speeding up of side reactions.

结果表明，合成气氢解反应活性和甲醇选择性明显低于纯氢氢解反应活性和甲醇选择性，反应温度高对提高催化剂活性有利，但同时也加速了副反应的进行。

This wor k deals with the effects ten of bromides and iodobenzene in catalytic hydrogenolysis debenzylation of 2,4,6,8,10,12-Hexabenzyl-2,4,6,8,10,12-hexaazaisowurtzitane.

研究了溴苯等10种溴化物及碘苯在六苄基六氮杂异伍兹烷催化氢解脱苄中的作用。

Adding Cr in the catalyst enhances the selectivity to benzaldehyde (from 85.6 to 91.2％ at 400℃). Cu or Ti is very beneficial for the hydrogenation of methyl benzoate to toluene or the hydrogenolysis of methyl benzoate.

Cr调变的催化剂提高了甲醛选择性(在400℃，从85.6提高到为91.2％)，Cu和Ti调变的催化剂则显示较高的苯甲酸甲酯深度加氢活性，即氢解活性。

Amino alcohol via LAH reduction and hydrogenolysis.

经过LAH还原和氢解作用得到了-氨基醇。

The yields were better when DHPCE with nitro group in meta or ortho position of the benzene ring were hydrolyzed in basic conditions, while the hydrogenolysis and acidic reactions gave very poor yields.

当苯环的间位和对位存在硝基，碱性水解时，在二氢吡啶环的3位引入氯乙醇的酯能得到较好的收率；酸性水解和氢解法则不宜用来合成ADHPA。

An alternative way of the synthesis of methanol from syngas is low-temperature methanol synthesis via methyl formate in liquid phase, namely, carbonylation of methanol in the first step, and hydrogenolysis of methyl formate in the second step.

低温液相甲醇合成是指在（80-160℃）范围内，甲醇首先与合成气中的CO发生羰基化反应生成甲酸甲酯，甲酸甲酯再氢解生成甲醇的两个反应在一个反应器内串联进行的方法。

The resulting polymer undergoes hydrogenolysis at atmospheric pressure in the presence of a palladium on charcoal and the pendant benzyl group was removed completely.

所得聚合物在Pd/C催化下氢解，可以定量地去除苄基保护基，从而得到侧链带有羟基的新型功能性可生物降解聚酯。

Under syngas or pure H2, methyl formate hydrogenolysis was carried out over ultrafine CuO－BaO／SiO2 catalysts with various copper content,which had been previously investigated by TEM,BET and TPR techniques.

研究了在合成气或纯氢气气氛下CuO－BaO／SiO2催化剂甲酸甲酯氢解反应活性的变化，并对催化剂进行了TPR、TEM和BET表征。

Multi-hydrogen-groups on the catalyst make deep hydrogenation or hydrogenolysis take place. Adding promoters in the copper-substrate and zinc-substrate catalysts helps to formatting the multi-hydrogen-groups on the surface of them.

通过助催化剂的添加，在Cu基催化剂和Zn基催化剂上产生多氢吸附集团，可以改善催化剂深度加氢或氢解反应的性能，以有效地调控深度加氢反应。

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％。