丁烯

On the same catalyst, the adsorption velocity and quantity between the isobutane and butene has great differences, which results in the very low isobutane/butene adsorption ratio in the micro-pore of the catalyst, especially at higher temperature.

利用原位红外对异丁烷和丁烯的吸附和反应历程研究结果表明，异丁烷和丁烯在催化剂不同活性位上的吸附反应过程差别很大。

The experimental results showed that: the adsorption of methanol and isobutylene conform to Elovich equation. The adsorption quantity of methanol was bigger than that of isobutylene, but the adsorption rate was slower.

采用过渡应答技术对甲醇和异丁烯在改性b分子筛上的吸附行为进行了研究，研究结果表明：异丁烯和甲醇在改性b分子筛上符合先快吸附后慢吸附的Elovich吸附规律。

The behaviors of methanol and isobutylene adsorbed over a modified-b zeolite catalyst were studied by the transient response method in a chromatogram-reactor. The experimental results showed that: the adsorption of methanol and isobutylene conform to Elovich equation.

摘 要：采用过渡应答技术对甲醇和异丁烯在改性b分子筛上的吸附行为进行了研究，研究结果表明：异丁烯和甲醇在改性b分子筛上符合先快吸附后慢吸附的Elovich吸附规律。

Kinetics of isobutylene hydration reaction catalyzed by fine powder of NKC-9 ion exchange resin,and effects of catalyst concentration,temperature,pressure,stirring rate and isobutylene concentration on reaction were studied in a semibatch reactor.

采用半连续反应过程，使用NKC -9离子交换树脂细粉，改变催化剂浓度、反应温度、反应压力、搅拌转速和异丁烯浓度等条件，对异丁烯水合反应动力学进行了实验研究。

By the mechanism of the electrocyclic reaction, three groups of 4-hydroxy-2-cyclobutenones 4 were designed and synthesized to investigate their behaviors underthe thermolysis conditions Meanwhile, a new procedure for preparation of 2(5H)-furanone 5 Was discovered.

根据电环化反应机理，我们设计了三组不同类型的4-羟基-2-环丁烯酮(4)。通过对4-羟基-2-环丁烯酮(4)进行热解，发现了一种制备2(5H)-呋喃酮类化合物(5)的新方法。

The mass transter can be enhanced ,when we introduce sulfuric acid and cuprous oxide into this system.The model is formed to describe the transference of the martial between the four phases: gas-liquid-liquid-gas, which can explain some problems. We analyze the dead of the catalyst, and make a conclusion that the surface of the catalyst is covered with some compounds such as bluestone, which lessen the activity points of the catalyst and debase the activity.

在SO_4~(2-)／ZrO_2-La_2O_3催化的反应系统中加入稀硫酸和氧化亚铜促进了异丁烯和一氧化碳的传质、使反应得以快速，高选择性的进行，异丁烯的转化率达95％以上，特戊酸的收率达47％；讨论了g-l-l-s传质过程；对催化剂作了失活分析，催化剂失活的原因是因为反应后的催化剂表面覆盖了一层硫酸盐，使催化剂的活性中心数减少，活性降低。

Water,c12-20 acid peg-8 ester,octyldodecanol,cetearyl isononanoate,butylene glycol,biosaccaride gum-1,peg-40 hydrogenated caster oil,ethylhexyl menthoxycinnamate,phenoxyethanol,potassium cetyl phosphate,macadamia ternifolia seed oil,dimethicone,carbomer,propylene glycol,glyceryl stearate,cocoglycerides,butyrospermum parkii,c12-13 alkyl lactate,methylparaben,benzophenone-3,pentadecalactone,sorbic acid,citrus aurantium dulcis oil,sodium hydroxyde,tocopheryl acetate,disodium edta,iris germanica root extract,retinyl palmitate,equisetum arvense extract,butylparaben,peg-8,propylparaben,ethylparaben,sodium hyaluronate,chlorhexidine digluconate,citrus aurantium amaraoil,tocopherol,ascorbyl palmitate,citric acid,ascorbic acid,limonene,linalool

水，c12-20 acid peg-8 ester，辛基十二烷醇，鲸蜡硬脂醇异壬酸酯，丁烯二醇，多醣物质，PEG-40氢化蓖麻油，4-甲氧基肉桂酸-2-乙基己基酯，苯氧乙醇，十六烷基磷酸钾，澳洲胡桃子油，地美司康，卡波姆，丙烯乙二醇，甘油硬脂酸，椰油脂酸甘油酯类，牛油果，c12-13烷醇乳酸酯，对羟基苯甲酸甲酯，二苯甲酮-3 ，环十五内酯，山梨酸，甜橙油，氢氧化钠，维生素E醋酸酯，乙二胺四乙酸二钠，鸢尾花萃取，维他命A酯，问荆萃取，对羟基苯甲酸丁酯，聚乙二醇- 8，羟苯丙酯，羟苯乙酯，透明质酸钠，洗必泰葡萄糖酸盐，苦橙油，维生素E ，维生素C棕榈酸酯，柠檬酸，抗坏血酸，柠檬精油，沉香醇水：几乎所有护肤品成分第一位都是水。辛基十二烷醇：界面活性剂、乳化剂、稠化剂，有一定刺激性

In recent years, as the Maleic anhydride is being produced in larger scale a number the investigation have been reported on the hydrogenation of the MA to SA,γ-butyrolactone , succinic anhydride , tetrahydrofuran and 1, 4-butanediol which are important chemicals in medicine, pesticide and petrochemistry.

近些年来，由于顺丁烯二酸酐生产规模的大型化，以廉价的顺丁烯二酸酐为原料合成高附加值化学品的研究倍受青睐。

Synthesis technology of cinnamyl methyl fumarate containing α,β-unsaturated carbonyl group and its antimicrobial activity was studied.

以α，β-不饱和羰基结构为母体设计合成反丁烯二酸桂醇甲酯，并对反丁烯二酸桂醇甲酯的抗菌活性进行了研究。

Acid--aldehyde polymer tanning agent P (acrylic acid-crotonaldehyde was copolymerizaed from acrylic acid and crotonaldehyde in water and its structure was characterized by IR,〓C-NMR and DSC.

以丙烯酸、丁烯醛为共聚单体，采用水溶液共聚法，合成了含醛、酸基团高分子鞣剂----丙烯酸-丁烯醛共聚物，并利用IR光谱、〓C-NMR及DSC对其结构进行了确认和表征。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新