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(31) The results showed that the dewatered ionic liquid could still catalyze the alkylation, and the carbonium mechanism was established through the GC-MS analysis of the reaction liquid product.

(32) In this study, the production and demand for gasoline product and alkylation gasoline component in domestic and abroad is analyzed, the development trend in the coming several years is forecasted.

(33) From the isobutane alkylation with butene at the presence of acidic catalyst, alkylate is the ideal blend composition of gasoline.

(34) The application of catalytic distillation reactor in benzene alkylation process is presented.

(35) From the isobutane alkylation with butene at the presence of acidic catalyst, alkylate is the ideal blend component of automobile gasoline.

(36) The processes and catalysts for synthesis of 2, 6 - dialkylnaphthalene via alkylation and acylation, respectively, were reviewed.

(36) Wish you can benefit from sentencedict.com and make progress everyday!

(37) The effect of various independent variables which affected the selectivity of nonene during the alkylation of benzene and propylene on phosphate catalyst was studied.

(38) This is carried out by chemical and petrochemical industries in processes such as isomerization, alkylation homologation, etc.

(39) Relations between benzene to propene ratio(R) and reactive results in alkylation were studied.

(40) Hexadecylbenzene was prepared by the alkylation of benzene with 1 - hexadecene over supported hydrofluoric acid on USY.

(41) METHODS Strontium ranelate was synthesized from citric acid via decarboxylation , esterification, cyclization, alkylation, hydrolysis and salification.

(42) Coke deactivation of alkylation catalyst exhibited independent deactivation mechanism basically in supercritical phase.

(43) The development of shape - selective alkylation of biphenyl to 4,4' - dialkylbiphenyl over zeolite catalysts is reviewed.

(44) Critical units to be upgraded include fluid catalytic cracker units , cokers, ultracrackers and alkylation units.

(45) Deactivation and regeneration of QZ-2000 catalyst for alkylation of benzene and propylene to synthesize cumene were studied.

(46) N butyl 2 ethoxy thioacridone was prepared from o chloro benzoic acid and p phenetidine by means of Ullman reaction, cyclization, N alkylation and sulfurization.

(47) The reaction yield can be increased by the improvement of alkylation methods.

(48) The process of alkyl naphthalene preparation by alkylation, acylation and direct extraction are also discussed.

(49) Effect of reaction temperature on coking deactivation of a modified HY zeolite catalyst for alkylation of benzene with propylene was investigated.

(50) Polystyrene - supported N - benzyl - N - alkyl - aminopyridine was prepared through chloromethylated polystyrene treated with 4 - aminopyridine and alkylation agents.

(51) HZSM-5 zeolite catalyst was treated with aqueous H_3BO_3 and the catalytic activity of the prepared catalysts was investigated by the alkylation of toluene with ethanol.

(52) Using liquified petroleum gas as feed stock, alkylation experiment was done with self-made ZXM-19 alkylation catalyst on fixed catalytic bed reaction apparatus.

(53) Ethopabate is prepared via esterification, acylation and alkylation from p - aminosalicylic acid in 87.4 % overall yield.

(54) This paper elucidates the present situation of research and development of solid acid catalysts for the alkylation of isobutane with butene.

(55) Optically active 3,4-diazaphospholane ligands and their application in asymmetric hydroformylation and allylic alkylation reactions.

(56) The Octane Number is retained owing to HZSM 5 ? ? s excellent ability of aromatization, isomerization and alkylation.

(57) Methods Etiracetam was synthesized from 2 - pyrrolidone by N - alkylation and aminolysis.

(58) Alkylation of ambident nucleophiles different places by using phase - transfer catalytic agent were studied in this paper.