查询词典 butyl

A selective and mild PS-DIB/ionic-liquid immobilized TEMPO catalytic oxidation procedure of alcohols to the corresponding aldehydes and ketones in ionic liquid BF4 at room temperature was developed. The oxidant PS-DIB was prepared via Iodation and acetylation of polystyrene resin. For the preparation of the ionic-liquid immobilized TEMPO catalyst, 4-(2,2,6,6-Tetramethyl-1-oxyl-4-piperidoxyl)butyl bromide was first synthesized from 2,2,6,6-tetramethyl-piperidin-4-ol-N-oxyl and 1,4-dibromobutane.

将聚苯乙烯树脂先碘化再乙酰基化，制得了负载型二乙酰氧碘苯(diacetoxyiodo polystyrene，PS-DIB)作为氧化剂。2，2，6，6-四甲基-N-氧自由基哌啶醇(2，2，6，6-tetramethyl-piperidin-4-ol-N-oxyl，TEMPO)与1，4-二溴丁烷反应生成4-溴丁氧基-2，2，6，6-四甲基-哌啶-1-氧化物，再与N-甲基咪唑发生季铵化反应，生成的溴化季铵盐与四氟硼酸钠进行离子交换制得氟硼酸型2，2，6，6-四甲基-N-氧自由基哌啶负载离子液体TEMPO-IL。

Pilot-scale experiment for synthesis of tert-butyl alcohol from isobutylene in C4 raffinate was carried out by counterflow hydration over large grain ion exchange resin catalyst in a φ100 mm×10 m reactor.

采用大颗粒离子交换树脂催化剂，在φ100mm×10m的反应器中进行了异丁烯催化逆流水合制叔丁醇的中间试验。

The Catalysis effect of tertiary butyl-ferrocene and lead chromate etc.on RDX/AP HTPB propellant burning rate has been examined.

探索了叔丁基二茂铁、铬酸铅等添加剂对RDX/AP丁羟推进剂燃速的催化效果。

3 KPa for the system of n-butyl mercaptan and octane was measured by a vapor-liquid equilibrium autoclave.

利用双循环汽液平衡釜测定101.3kPa下噻吩-正辛烷体系的汽液相平衡数据。

While erthrocyte, hemoglobin and Hela cell were under oxidative damage induced by the hydrogen peroxide (H2O2) or tert-butyl hydroperoxide on different concentrations of dihydromyricetin, hemolysis rate of erythrocyte and methemoglobin converted from hemoglobin was estimated by ultraviolet-visible absorption spectroscopy. Whereas mmalondialdehyde from erythrocyte was measured by thiobarbituric acid colorimetry, the cellular viability of Hela cell was examined using MTT 3-(4, 5-dimethylthiazol-2-yl-2, 5-diphenyl tetrazolium bromide assay.

在不同的二氢杨梅素浓度下，用过氧化氢或过氧化特丁烷对红细胞、血红蛋白和Hela细胞进行氧化伤害，以紫外－可见光分光光度法检测红细胞溶血率和由正常血红蛋白生成的高铁血红蛋白，硫代巴比妥酸法测定红细胞中的丙二醛，MTT法检测Hela细胞的活力。

When used as butyl rubber reaction solvent and refrigerant respectively, methyl chloride and 1,1- difluoroethane (HFC-152a) have critical requirements for their water contents.

一氯甲烷和1，1-二氟乙烷(HFC-152a)，分别作为丁基橡胶反应溶剂和制冷剂使用时，对其含水量有苛刻的要求。

The synthesis of methyl tert-butyl ether is an important process in industrial production.

甲基叔丁基醚工业生产是典型的催化精馏过程。

The company is committed to the wholesale, retail chemical products, including: industrial toluene, xylene, white oil methanol, ethyl, n-butyl, C ketone, butanone, anti-Whitewater, cyclohexanone, etc. methylal more than 40 kinds of products, the average monthly sales volume over 4000 tons.

本公司主要致力于批发，零售化工产品，包括：工业用甲苯，二甲苯，白电油甲醇，乙酯，丁酯，丙酮，丁酮，防白水，环已酮，甲缩醛等40多种产品，平均月销量达4000多吨。

Sulphur and compounds made from this process: i.e. Latex gloves, neoprene and butyl rubber.

制造过程中产生的硫及其化合物，如：橡胶手套、氯丁橡胶和丁基橡胶。

Given in the work of hands will inevitably be exposed to UV light oil, so it is best to wear nitrile rubber or butyl rubber gloves.

由于工作中双手不可避免地会接触到UV上光油，因此最好戴上腈橡胶或丁基橡胶手套。

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