查询词典 methanolysis

The methanolysis of soybean oil and waster cooking oil bylipase-catalysis were not significant different, which showed that lipase was an effectivecatalyst on transesterification of oils having high concentration of free fatty acids.

其次，对副产物甘油的生物利用进行了研究，分别考察了在厌氧和微氧条件下，间歇发酵和批式流加发酵中工业级和试剂级原料对菌体生长及产物合成的影响。

Results showed that AOT reversed micellar systems provided a suitable micro-environment for biodiesel production. The optimal parameters were: the ratio of water and AOT 11, AOT concentration 50 mmol/L, temperature 40℃, pH 7, molar ratio of methano and oil 3, and rotating speed 180 r/min. The transesterification rate reached 90% when a 3-step methanolysis protocol was used.

研究结果表明： AOT/异辛烷反胶束体系为Candida sp.99-125脂肪酶催化提供了较为合适的微环境，在W0为11，表面活性剂浓度为50 mmol/L，温度为40℃，缓冲液pH值为7的AOT/异辛烷反胶束体系中，醇油摩尔比为3∶1，摇床转速为180 r/min，采用12h3次流加1 mol当量的甲醇，单批最高酯转化率可以达到90%。

Lipozyme TL IM can efficiently catalyze methanolysis transesterification of rapeseed oil for biodiesel production.

脂肪酶Lipozyme TL IM在有机相体系中能有效催化菜籽油醇解反应生成生物柴油。

Combined use of LipozymeIM TL and Novozym 435 was proposed further to catalyze the methanolysis,and the water-resistant and phospholipids-resistant abilities of the lipases could be improved.

同时还发现把脂肪酶LipozymeIM TL 和 1%Novozym 435混合起来能大大提高脂肪酶的耐水、耐磷脂能力。

Jatropha curcas L.seed oil ; methanolysis ; reaction system ; phase diagram

麻疯树籽油；甲醇解；反应体系；相图

This paper focuses on the stability study of Rhizopus oryzae IFO4697 when used for the methanolysis of renewable oils for biodiesel production. The results showed that water content was important for achieving high catalytic activity and good stability of the biocatalyst. The optimum water content was found to be 5%-15%. Both particle size and desiccation methods showed no obvious effect on the stability of the biocatalyst. With GA cross-linking pretreatment, the stability of the biocatalyst could be improved significantly. When Rhizopus oryzae IFO4697 repeatedly used for next batch reaction, direct vacuum filtration was found to be a good way for the maintenance of good stability of the biocatalyst.

本实验对固定化全细胞Rhizopus oryzae IFO4697催化植物油脂合成生物柴油的稳定性进行了系统地研究，结果表明：反应体系水含量对于全细胞催化剂的反应活性和催化稳定性有重要影响， 5%~15%含水量适宜；研究范围内，载体粒度及干燥方式对稳定性影响不显著；经过戊二醛交联后，全细胞催化油脂甲醇解反应的稳定性显著提高， 1200 h反应后，仍然可以保持75%的生物柴油得率；真空抽滤直接回用的方式有利于稳定性的保持。

The process was methanolysis ed alkyl inino-acetic acid ester hydrogen chloride salt from methyl-cyanide.

研究了由乙腈为原料经烷基亚氨基醋酸酯盐酸盐醇解制备原乙酸三甲酯的工艺方法，对投料比、反应温度、反应时间及中和指示剂等工艺条件进行了研究，得出较优惠的工艺条件。

The oil was further explored for biodiesel production by lipase-catalyzed methanolysis. Two processes were studied, namely, three-step methanol loading in solvent-free system and all-in-one methanol loading in tert-butanol system.

进一步利用该酵母油脂为原料分别研究了无溶剂体系中三步甲醇法及在叔丁醇介质体系中脂肪酶催化合成生物柴油，发现脂肪酶可以有效转化该酵母油脂制备生物柴油。

The density functional theory and MP2 method were employed to study the reaction pathways of methanolysis of 3-methyl cyclic ethylene phosphate: CH3O－＋MEP; CH3OH＋MEP; CH3O－＋HMEP; CH3OH＋HMEP.

采用密度泛函理论和MP2方法研究了3-甲基环状乙撑磷酸二酯与甲醇的反应途径： CH3O－＋MEP； CH3OH＋MEP； CH3O－＋HMEP； CH3OH＋HMEP。

The crudeglycerol from biodiesel production could be directly converted to 1,3-PD without any priorpurification. In flask cultures, the 1,3-PD yields of 0.62 and 0.44mol/mol on crude glycerolfrom lipase-and alkali-catalyzed methanolysis of soybean oil were lower than that of0.68mol/mol on pure glycerol. In fed-batch fermentations, the 1,3-PD yields of 0.47 and0.46mol/mol on crude glycerol were comparable to that of 0.49mol/mol on pure glycerol.

生物柴油的副产物甘油不经纯化可以直接用来发酵生产1，3-丙二醇，在摇瓶培养中，由酶法和碱法得到的甘油获得的1，3-丙二醇的转化率分别为0.62mol／mol和0.44mol／mol，而纯甘油得到的转化率为0.68mol／mol；在批式流加发酵中，由酶法与碱法得到的甘油和纯甘油得到的1，3-丙二醇的转化率相差不大，分别为0.47mol／mol、0.46mol／mol和0.49mol／mol，纯甘油得到的生产强度最高，为2.0g／，两种粗甘油得到的生产强度都为1.7g／。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了