异丁

During the reaction of alkylation, general contained 0.2%~2.0% butadiene will produce viscous heavy composite materials, which will raise final boiling point of alkylate and decrease octane, what is more, it will react with acid to produce corresponding ester, which will increase the consumption of acid, Therefore, we must remove butadiene by selective hydrogenation, at the same time, it will convert some of 1- butane to 2- butane by isomerization and raise octane of alkylate.

一般含有0.2%~2.0%的丁二烯，其在烷基化反应中，可生成一种分子量很高的粘稠重质迭合物，使烷基化油的干点升高，辛烷值降低，并且它还和酸反应生成相应的酯而加大酸耗量。因此必须经过选择性加氢除掉丁二烯，同时，将部分1-丁烯异构化为2-丁烯，以提高烷基化油的辛烷值。

Using density functional theory, the rearrangement of butene double bond catalyzed by a 3T cluster model of zeolite was investigated.

基于含有两个Si和一个Al的分子筛3T簇模型，利用密度泛函方法研究了分子筛催化1-丁烯双键异构为cis-2-丁烯的反应机理。

Based on the analysis of the chromatogram of flavoring compositions of Taishan Tequ, 13 kinds of flavoring compositions including n-propanol, isoamyl alcohol, ethyl caproate, ethyl lactate, ethyl acetate, ethyl butyrate, caproic acid, acetic acid, butyric acid, acetaldehyde, acetal, total acids and total esters were determined as the chromatogram skeleton compositions of Taishan Tequ. The physiochemical indexes of Taishan Tequ could be under proper control through the stipulation of the content range of the above flavoring compositions, which is an effective way to liquor quality improvement and stability and has greatly improved the blending techniques of Taishan Tequ.

以泰山特曲酒香气成分色谱分析结果为基础，确定了正丙醇、异戊醇、己酸乙酯、乳酸乙酯、乙酸乙酯、丁酸乙酯、己酸、乙酸、丁酸、乙醛、乙缩醛、总酸、总酯这13种香味成分作为泰山特曲的色谱骨架成分来控制成品酒理化指标，并制订了控制范围，使泰山特曲的勾兑技术有了飞跃的发展，成为提高与稳定产品质量的有效方法。

The method is characterized in that: mixture of macromolecular dihydric alcohol and a dihydroxybutyl-terminated polydimethylsiloxane is dehydrated, added with diisocyanate for reaction, then added with a bis propionic acid, a dihydric alcohol chain extender and a catalyst - dibutyl tin laurate, and is diluted by acrylic ester; temperature reduction and emulsion are performed on the mixture after reaction; chain extension reaction is performed in water by a multi-amine chain extender, and siloxane modified polyurethane dispersoid which contains acrylic ester monomer is prepared; and an initiator - potassium persulphate is added into the siloxane modified polyurethane dispersoid for emulsion polymerization.

特征是先将大分子二元醇与二端羟丁基聚二甲基硅氧烷的混合液脱水后加入二异氰酸酯，反应后加入二羟甲基丙酸、二元醇扩链剂和催化剂二月桂酸二丁基锡，并用丙烯酸酯进行稀释，反应后降温乳化，用多元胺扩链剂在水中进行扩链反应，得到含有丙烯酸酯单体的硅氧烷改性聚氨酯分散体，然后再通过加入引发剂过硫酸钾进行乳液聚合。

The extracting ability of several organic solvents such as ethyl acetate, butyl acetate, glycerol triacetate, iso-amy lacetate, and n-butanol, was compared, and it was found that ethyl acetate was a good kind of organic solvent.

比较了几种不同的有机溶剂：正丁醇、乙酸丁酯、乙酸乙酯、三乙酸甘油酯、乙酸异戊酯等的萃取能力，发现乙酸乙酯是一种理想的提取溶剂。

The recoveries for 2,3-BD and acetoin were 91%and 92%,respectively.Aqueous two-phase extraction of 2,3-BD from real fermentation broth,the removal ratio of cells was above 99%,and the soluble proteins were about 85%in the top phase,which resulted in easy recovery of 2,3-BD from the top phase by vaporization because a viscous slurry was not formed by glucose,cells and soluble proteins at high temperature as in traditional separation methods.In addition,the cells recovered from the fermentation broth could be used as inoculum for further fermentation.

结果表明，目标产物2，3-丁二醇和乙偶姻主要富集在上相中，而葡萄糖主要富集在下相中；当异丙醇和硫酸铵的质量浓度分别是34%和20%时，2，3-丁二醇和乙偶姻的分配系数分别为8.29和8.98，回收率分别达到91%和92%；采用该条件对发酵液直接进行萃取，细胞的去除率在99%以上，可溶性蛋白去除率可达85%。

Water,butylene glycol,cyclomethicone,VP/VA copolymer,glyceryl stearate,glycerin,ppg-15 stearyl ether,titanium dioxide,propylene glycol,cetyl alcohol,citrus aurantium dulcisfruit extract,saccharide isomerate,biosaccharide gum-1,ethoxydiglycol,peg-40 stearate,glycyrrhiza glabraroot extract,morus bombycis root extract,potassium cetyl phosphate,phenoxyethanol,c12-20 acid peg-8 ester,triethanolamine,prunus amygdalus dulcis oil,carbomer,caprylyl glycol,caffeine,disodium edta,methylparaben,chondrus crispus,butylparaben,iris germanica root extract,pentadecalactone,sodium polyacrylate,ethylparaben,sodium hyaluronate,peg-8,propylparaben,citric acid,chlorhexidine digluconate,tocopherol,ascorbyl palmitate,ascorbic acid

水，丁烯二醇，环甲硅脂，VP/VA共聚物，甘油基硬脂酸，甘油，ppg-15 stearyl ether，二氧化钛，丙二醇，十六烷基醇，橙子萃取物，天然异构寡糖， biosaccharde gum-1，乙基氧基乙二醇，聚乙二醇- 40硬脂酸，甘草根提取物，桑白皮根萃取，钾十六烷基磷酸盐，苯氧乙醇，c12-20 acid peg-8 ester，三乙醇胺，甜杏仁油，高分子胶，辛乙二醇，咖啡因，乙二胺四乙酸二钠，对羟基苯甲酸甲酯，卡拉胶，对羟基苯甲酸丁酯，鸢尾花根萃取， pentadecalactone ，聚丙烯酸钠，羟苯乙酯，透明质酸钠，聚乙二醇- 8，羟苯丙酯，柠檬酸，洗必泰葡萄糖酸盐，维生素E，维生素C棕榈酸酯，抗坏血酸

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

Our company supply raw materials and related intermediates as follows: Second dibutyryl cAMP calcium, voriconazole, terbinafine, vecuronium amines, cAMP, thiamphenicol, a chlorophenol hydrochloride esters, card network sodium phosphate tilmicosin, foscarnet, lornoxicam, Tilmicosin, Cephalosporium aspirin acid, ceftiofur hydrochloride, ceftiofur sodium, Ozagrel, ondansetron hydrochloride ketones, hydroxyurea, ticarcillin sodium, telmisartan, esmolol hydrochloride, hydrochloric acid Daguan Nikkomycin, adefovir dipivoxil, buflomedil hydrochloride, granisetron hydrochloride, warfarin sodium,-methyl gabexate acid, nicergoline, pantoprazole sodium,·, tegafur, cefepime hydrochloride, vecuronium bromide, hydrochloric acid meclofenoxate, sertraline hydrochloride, Cefonicid amine salt, aztreonam, ticarcillin, cefdinir, cefodizime sodium, sodium ferulate, colloidal pectin secretion, 2,3 - cyclopentene and pyridine, Piperacillin acid, cefetamet US-acid, hydrochloride Cefmenoxime ,3-TZ, 2 - deoxy-D-glucose, two-amidine urea benzene, sodium Cefonicid, Cefonicid intermediates, ester Cefamandole sodium, Cefalotin acid, intermediates cefpirome, cefepime sulphate, cefepime intermediate nucleus of cefepime, cefpirome nucleus, Cefamandole sodium, ceftriaxone new active ester, oxaliplatin, cyclophosphamide vary gland amines, polyene match him.

我公司供应的原料药及相关中间体为：二丁酰环磷腺苷钙、伏立康唑、盐酸特比萘芬、维库溴胺、环磷腺苷、甲砜霉素、盐酸甲氯酚酯、卡络磺钠、磷酸替米考星、膦甲酸钠、氯诺昔康、替米考星、头孢匹胺酸、头孢噻呋盐酸盐、头孢噻呋钠、奥扎格雷、盐酸恩丹西酮、羟基脲、替卡西林钠、替米沙坦、盐酸艾司洛尔、盐酸大观霉素、阿德福韦酯、盐酸丁咯地尔、盐酸格拉司琼、华法林钠、甲磺酸加贝酯、尼麦角林、泮托拉唑钠、普拉洛芬、替加氟、盐酸头孢吡肟、维库溴铵、盐酸甲氯芬酯、盐酸舍曲林、头孢尼西胺盐、氨曲南、替卡西林、头孢地尼、头孢地嗪钠、阿魏酸钠、胶体果胶泌、2，3-环戊烯并吡啶、哌拉西林酸、头孢他美酸、头孢甲肟盐酸盐、3-TZ、2-脱氧-D-葡萄糖、双脒苯脲、头孢尼西钠、头孢尼西中间体、头孢孟多酯钠、头孢噻吩酸、头孢匹罗中间体、头孢吡肟硫酸盐、头孢吡肟中间体、头孢吡肟母核、头孢匹罗母核、头孢孟多钠、头孢曲松新型活性酯、奥沙利铂、异环磷腺胺，多烯他赛。

The synthesis of isoamyl acetate with sulfuric acid and TBAB as catalyst was studied,and the effects of the raw material ratio,the dosage of catalyst and reaction time on the yield were investigated.

以冰乙酸和异戊醇为原料，用浓硫酸和四丁基氯化铵混合物催化合成乙酸异戊酯。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。