酸催化反應 的英文怎麼說
中文拼音 [suāncuīhuàfǎnyīng]
酸催化反應
英文
acid catalyzed reaction-
Regeneration of alumino - phosphate solid acid catalyst in alkylation
磷鋁固體酸催化劑在烷基化反應中再生性能的研究Long chain alkyl benzenes is the product of cyclization - decarboxylation - aromatization of fatty acid, with the help of clay minerals catalytic effect, which comes from bacteria, seaseed and higher plant lipid ; or the reaction product of monocylic aromatics and fatty acid alkyl group under the same conditions
長鏈烷基苯主要是細菌、藻類和高等植物類脂化合物中脂肪酸在粘土礦物催化下發生環化脫羧再芳構化或單環芳烴與脂肪酸烷基化反應形成的產物。Hartshorn ( nh4oh ) was used as a new catalyst instead of acetic acid in the saponification reaction of base zinc salt of dioctyl thiophosphate ( t203 )
摘要選用氨水溶液代替醋酸作為新型催化劑用於硫磷雙辛基堿性鋅鹽（ t203 ）的皂化反應。Through orthogonal design experiments on synthesizing p - tert - butylcstechol from hydroquinone and isobutylene by using a new catalyst prepared from cobalt naphthenate and zinc chloride, the optimum technology parameters were obtained : mole ratio was 1 : 1. 15 for hydroquinone and isobutylene, mass ratio was 100 : 20 for hydroquinone and catalyst, and the reaction temperature was 100 5
摘要用環烷酸鈷與氯化鋅復配的新型催化劑，以鄰苯二酚、異丁烯為原料合成對叔丁基鄰苯二酚，通過正交實驗確定的較佳工藝參數為：鄰苯二酚：異丁烯（物質的量比） 1 : 1 . 15 ，鄰苯二酚：催化劑（質量比） 100 : 20 ，烷基化反應溫度100 5 。The main work and the conclusion of the article are : ( 1 ) give a suggestion on the reaction mechanism and the principle of catalyst selection. ( 2 ) by comparison of the catalyst activity of solid superacid with the zinc oxide, stannous chlorde and tin ( ii ) octate in the synthesis reaction. we find that although its activity is lower than tin ( ii ) octate, obviously higher than that of traditional zinc oxide and stannous chlorde. from the point of preparation cost, we select solid superacid as catalyst
但從催化劑的制備成本和工藝的角度選擇，固體超強酸具有明顯的優勢； （ 3 ）制備一系列單組元和雙組元硫酸促進氧化物固體超強酸，並用於丙交酯的合成反應，篩選具有最佳活性的固體超強酸催化劑： （ 4 ）使用so2 - 4 / zno - sno2 （ 2 ： 1 ） la3 +固體超強酸作催化劑，反應脫水時間1Abstract : using sulfamie acid as catalyst, synthesis of benzyl acetate and phenylethyl acetate through esterification were studied. the yields are good with high purity
文摘:研究了氨基磺酸催化酯化合成乙酸芐酯和乙酸苯乙酯。此工藝反應時間短、能耗低、產品純度高、產率良好、無三廢污染，優于文獻方法。However, glybetaine does not accumulate in many important crop plants such as potato, tomato or rice. among plants glybetaine biosynthetic pathway has been thoroughly characterized in sugar beet and spinach, and biosynthesis is localized in the chloroplast by a two - step oxidation of choline via the intermediate betaine aldehyde. the first enzyme, choline monooxygenase ( cmo ) and the second enzyme are all localized in chloroplast
甘氨酸甜菜堿是由膽堿起始的兩部催化反應完成的，第一個酶是膽堿單氧化酶（ cmo ） ，已經被純化，並且它是定位在葉綠體基質中；第二個酶是甜菜堿醛脫氫酶（ badh ） ，它也主要定位於葉綠體中。This review summarizes recent developments for the epoxidation of olefins with hydrogen peroxide catalyzed by polyoxometalates, and points out the developmental way of this kind of catalyst in the future
文章綜述了以雜多酸為催化劑，過氧化氫為氧化劑的烯烴環氧化反應研究進展，指出了今後此類環氧化反應催化劑發展方向。The effect of the catalysts, e. g., concd. sulfuric acid, p - toluenesulfonic acid, dodecylbenzenesul - fonic acid on the esterification of starch was studied with cassava starch as the raw material, acetic anhydride as the esterifying agent and acetic acid as the dispersion medium
摘要以木薯澱粉為原料，用醋酸酐為酯化劑，以乙酸為分散遞質，探索了以濃硫酸、對甲基苯磺酸、十二烷基苯磺酸為催化劑對澱粉醋酯化反應的影響。Studied the liquid - phase synthesis of butyl acetate from n - butyl alcohol and acetic acid using the supported heteropoly blue as catalyst. examed several factors imposing on esterification. the results revealed : using this catalyst, the reactions conversion percentage reaches nearly 100 %, product yield is 98. 9 %, selectivity is 98. 9 %. reusing it 10 times, the efficiency is still well. in addition, using this catalyst, the reactions temperature is mild, the reaction time is short and the equipment hasnt any erosion. furthermore, there is no “ threewastesdischarge
對以負載型雜多藍為催化劑的乙酸與正丁醇的液相酯化反應進行了研究.考察了影響酯化反應的因素.結果表明：以負載型雜多藍為催化劑，酯化反應轉化率接近100 % ，收率可達98 . 9 % ，選擇性為98 . 9 % ，重復使用10次催化效果仍好.該催化劑還有反應條件溫和、反應時間短、對設備無腐蝕、無三廢排放等優點Acetylation between alcohol and benzoyl oxide was carried out using znbr2 as a lewis acid catalyst in solvent - free condition. some structures were characterized by nmr and ir
以溴化鋅為催化劑，在無溶劑條件下實現了醇與苯甲酸酐的酰化反應，部分產物經nmr和ir表徵。Study on synthesis of trioxa diaza schiff base crown dtdc
無水硫酸銅催化酯化反應性能的研究The cocatalytic effects of k2co3 on the double carbonylation of benzyl chloride
碳酸鉀在吡嗪類鈷配合物對氯芐雙羰化反應中的助催化作用Researching on micro millimeter solid superacid catalyzer
納米級超強酸催化酯化反應研究Application of solid acid catalyst in acrylic esterfication
丙烯酸酯化反應中固體酸催化劑的應用Abstract : the synthetic method of pentaerythrito naphthenate by n on - acid catalyst sno was studied. the influences of mole ratio of ethanediol and naphthenic acid, a mount of catalyst, reation time, reation temperature etc. on est erification were discussed and the suitable processing conditions were found
文摘:介紹了用氧化亞錫非酸性催化劑催化合成環烷酸季戊四醇脂的方法，通過討論醇酸摩爾比、催化劑用量、反應時間、反應溫度等因素對該脂化反應的影響，從而確定了適宜的工藝條件On the basis of catalyzing mechanism, it can raise the reaction efficiency of sodium sulfite and reduce the remains of sodium sulfite, and has evident catalyzing action by adding bivalent nickel ions and bivalent cobalt ions into the water under the condition of weak alkali
根據催化機理，在弱堿條件下加入二價鎳離子和二價鈷離子能提高水中亞硫酸鈉的反應效率，降低水中亞硫酸鈉的殘余量，對亞硫酸鈉的除氧效果具有明顯催化作用。The activity of different solid acids and influences of reaction temperature, molar ratio of benzene and nitrating agent on benzene nitrofication were discussed
討論各種固體酸催化劑對苯硝化的催化活性、反應溫度、苯與硝化劑物質的量比等工藝條件對硝基苯基本收率的影響。The influence of catalyst on the copolymerization of epoxy and cyanate was investigated, and the mechanism of their copolymerization was discussed. the catalyst can obviously accelerate the curing of the resin to decrease the curing temperature. the three kinds of reactions ( cyclotrimerization, co - reaction and polyetherification ) in their copolymerization are not simultneous and independent to each other. in the lack of cyanate functional group, the main structures are oxazoine and polyether structure in the cured resin, and the triazine ring structure is of miner importance
研究了催化劑對環氧樹脂與氰酸酯樹脂的共聚固化反應行為的影響，並初步探索氰酸酯/環氧固化的反應歷程.研究表明，催化劑能明顯地促進其固化反應，降低固化溫度，縮短固化時間；氰酸酯與環氧共聚反應歷程是首先氰酸酯三聚反應生成三嗪環結構，然後三嗪環開環與環氧共聚反應，最後是未能參與共聚反應的環氧官能團在唑啉結構和三嗪環的催化下發生聚醚化反應；在氰酸酯官能團欠量的條件下，固化樹脂中主要是唑啉和聚醚結構，而三嗪環結構的含量很少Preparation and study on catalysis of solid acid catalyst so42 - tio2 - zro2 - la2o3 supported by nano - sio
3超強酸的制備及催化反應研究分享友人