乙烷

Main Products polyformaldehyde, ethylene dichloride, dichloroethane, acetic anhydride, etc. in the industry has a good reputation.

主营产品多聚甲醛、二氯乙烯、二氯乙烷、醋酸酐等在业界具有较好的声誉。

Their technology and process is basically similar to that used ethylene, the raw material for the oxygen in the silver catalyst, caused by methane or nitrogen stabilizer, the existence of inhibitors of chloride, ethylene oxide directly generate ethylene oxide and ethylene B N and further to certain substances in water than in the tubular reactor for generating hydration ethylene glycol, ethylene glycol solution through evaporation to mention thick, dehydration, fractionation be ethylene glycol and other by-products.

它们的工艺技术和工艺流程基本上相似，即采用乙烯、氧气为原料，在银催化剂、甲烷或氮气致稳剂、氯化物抑制剂存在下，乙烯直接氧化生成环氧乙烷，环氧乙烷进一步与水以一定物质的量比在管式反应器内进行水合反应生成乙二醇，乙二醇溶液经蒸发提浓、脱水、分馏得到乙二醇及其他副产品。

If tissue culture medium is incubated in dialyzers and then rat dorsal root ganglion cultures are exposed to this medium, characteristic changes occur.

EO残留量主要是指EO灭菌后留在物品和包装材料内的EO和它的两个副产品氯乙醇乙烷和乙二醇乙烷。

It is also found that pressure has no detectable effect on the free-energy change of inserting a halothane from bulk water to DMPC, and does not change the regional preference of halothane, either.

另外也发现压力对於三氟氯溴乙烷从纯水溶入 DMPC 的自由能改变所造成的影响很小，且对於三氟氯溴乙烷的偏好区域没有可观的影响。

The results of experiment show the glass fiber dealed with by KH550 is notscattered in these solvents such as the water, the component solvent of phenol andtetrachloroethane, and ethyl alcohol solution of KH550, but it is evenly scattered inthe solution of PET, the concentration of which has great effect on the dispersion ofglass fiber. The glass fiber can' t be scattered when the value of consistency is below0.2664g/ml, and 0.75g glass fiber can be scattered in 100ml solution.

本实验通过对玻璃纤维分散的研究发现，玻璃纤维(长 3mm，经 KH550 处理)在水、苯酚/四氯乙烷、KH550 的乙醇溶液中都不能分散，而在 PET 的苯酚/四氯乙烷溶液中能均匀分散，且溶液的浓度对分散性影响很大，当浓度。2664g/ml 时，玻璃纤维不能分散，玻璃纤维在 100ml 浓度为 0.4444g/ml 的溶液(90℃下，PET 的饱和溶液)中的最大分散量为：0.75g。

Underoptimal conditions, in toluene / dimethyl phthalate / TBP, after EAHQ was oxidizedwith 〓, then the catalyst and styrene were added, the conversion of styrene basedon EAHQ is 68%, the selectivity for styrene oxide based on styrene is 92% and theTON of the catalyst is 500; in toluene / phenyl ether / TBP, epoxidation of styrenewas performed with 〓 generated in situ, the conversion is 46%, the selectivity is94% and the product can be separated by distillation under reduced pressure.

优化条件下，甲苯／邻苯二甲酸二甲酯／TBP(2／2／1，体积比)中，EAHQ先用〓氧化完全后，再加入催化剂A和苯乙烯进行环氧化反应苯乙烯相对于EAHQ的转化率为68％，生成环氧苯乙烷的选择性为92％，催化剂A的TON达到500；甲苯／二苯醚／TBP(1／3／1，体积比)中，原位生成〓条件下苯乙烯相对于EAHQ的转化率为46％，生成环氧苯乙烷的选择性为94％，产物可通过减压蒸馏分离。

The phosphines such as 〓, dppm bis(diphenylphosphinemethane, dppebis(diphenylphineethane and dppp bis(diphenylphosphinrpropaneare chosen for study. The chloro alkane, bromide alkane and acetone arechosen as solvents.

选择有机单膦〓和双膦配体dppm二(二苯基膦甲烷、dppe二(二苯基膦乙烷、dppp二(二苯基膦乙烷与〓反应，选择氯代烷、溴代烷和丙酮为反应溶剂。

TiO〓/K-M supported Ag/SiO〓 composite ceramic membrane tubes have been prepared and used as a membrane reactor for selective separation of C〓H〓 during the catalytic reaction process of CO〓 partially oxidating C〓H〓. By removing C〓H〓 produced in the catalytic reaction, thermodynamic balance of the reaction is upset and some side reactions from C〓H〓 are avoided, thus the conversion rate of C〓H〓 and the selectivity to C〓H〓 are effectively increased.

本研究设计、制备了硅藻土—莫来石陶瓷管负载的Ag/SiO〓复合膜，并将其应用于二氧化碳部分氧化乙烷催化反应过程中产物乙烯的选择性分离，有效地提高了催化反应的反应物乙烷转化率和产物乙烯选择性。

Absorption kinetic curves for two mixed solvent/polyurethane membrane systems (ethanol-1, 2-dichloroethane/PU and ethanol-ethyl acetate/PU) are measured, the replacement is observed in experiment. Dual mode theory combining Henry's law and B.

系统地测定了乙醇-乙酸乙酯和乙醇-1.2-二氯乙烷混合溶剂在聚氨酯膜中的吸收动力学曲线，发现了乙醇对膜内1，2-二氯乙烷的顶替现象，并运用亨利定律+B.E.T。

The results showed that C 2H 6 can be adsorbed on the surface terminal oxygen of Lewis base site P=O bonds through H atom in -CH 3 to form a molecular adsorption state, and the adsorption intensity of C 2H 6 increases with the rising of adsorption temperature.

结果表明，乙烷能够以 CH3 中的H原子吸附于催化剂表面P =O键的端氧上形成分子吸附态，并且随着吸附温度的升高，对乙烷的吸附强度逐渐增大；乙烯则主要是以C =C双键吸附在催化剂的Lewis酸位Fe3 +上。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。