Dehydrocyclization reaction
WebNov 5, 1999 · Dehydrocyclization ofn-Octane: Role of Alkene Intermediates in the Reaction Mechanism. B. Shi, B. Davis. Chemistry. 1997. Abstract The objective of the … Web针对有机液体脱氢技术,研究了以Raney-Ni为催化剂,在"湿-干多相态"反应模式下的环己烷脱氢反应.考察了在不同环己烷用量以及不同温度条件下环己烷脱氢反应的动力学,初步建立了脱氢反应动力学模型.研究表明:理论模型与实验结果吻合较好,Raney-Ni对环己烷脱氢反应具有很好的催化作用;在多相态反应 ...
Dehydrocyclization reaction
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WebSep 22, 2024 · dehydrocyclization (usually uncountable, plural dehydrocyclizations) (organic chemistry) Simultaneous dehydrogenation and cyclization, especially as part of … WebSystematic prediction of the products and intermediates of isotopic labeling in reaction pathway studies. Journal of Computational Chemistry 1998, 19 (7) , 741-753.
WebOct 28, 2024 · The dehydrocyclization and isomerization reactions take place in the second reactor. Paraffin isomerization is a moderately fast reaction, not so rapid as dehydrogenation of naphthenes [ 20 ]. The temperature drop through the third reactor is low compared to the first and second reactors, which is due to the heat production through ... WebAug 15, 2006 · It is shown that althoug Pt has better dehydrogenating properties as compared with gallium and zinc, the efficiency of catalysts based on Pt-ZSM-5 for light alkane aromatization is less because undersirable reactions such as hydrogenolysis and ethene (olefins) hydrogenation occur on the platinum surface, resulting in the production …
WebOct 21, 2024 · Our paper entitled “Noble Metal Substrate Identity Effects on the Self-Assembly, Dynamics, and Dehydrocyclization Reaction of Octaethylporphyrin Molecules” has been published by The Journal of Physical Chemistry C as part of a virtual special issue “125 Years of The Journal of Physical Chemistry”. We are grateful to have this chance to … WebPinner reaction of these compounds did not give the expected mono- and diamidines, but rather only compounds 7-10, with amido groups at 6-position were isolated. A mechanism for the reaction is proposed. Acyclic compounds 3 and 4, as well as cyclic benzimidazo[1,2-a]quinolines 5-8, exhibit interesting spectroscopic
WebApr 28, 2005 · The dehydrocyclization of n-heptane to toluene over a 1 wt.% PtBa/KL catalyst was studied in a fixed bed tubular reactor, at 723 K, 100 kPa and space–time in …
Webeffect on the reaction efficiency, with Togni reagent 4 proving to be optimal (entries 12–13). Having identi ed the optimal reaction conditions for the visible light-induced reductive pyridylation of alkenes, we investigated the ole n partner using 4-cyanopyridine. As shown in Scheme 1, a variety of styrenes bearing electron-donating- celery argsWebSep 25, 2024 · In this work, the dehydrocyclization reactions are favored at higher temperatures, which is consistent with the endothermic character of these reactions. Similar results were reported in the literature for the aromatization of ethylene using Ga/HZSM-5 catalysts. According to the authors, the high aromatics yield at higher temperatures has … buybestgearWebOct 20, 2024 · As a result, the temperature necessary to drive the dehydrocyclization of peripheral ethyl groups, resulting in the formation of tetrabenzoporphyrin molecules, was … buy best furniture onlineWebThe dehydrocyclization reaction for the production of aromatics from normal paraffins is highly endothermic. In one mode of operation, a fixed bed adiabatic reactor using steam … celery arabicWebJun 1, 1997 · @article{osti_539447, title = {Dehydrocyclization of n-octane: Role of alkene intermediates in the reaction mechanism}, author = {Shi, Buchang and Davis, B H}, abstractNote = {The objective of the present study is to define whether alkenes, formed during alkane dehydrocyclization, are reconverted to the alkane and to elucidate the … celery apply_async 参数WebSep 16, 2012 · 谢锋，男，五邑大学特聘教师，江门市高层次人才，博士毕业于华南理工大学有机化学专业。独立工作以来，以通讯作者或者第一作者已在ACSCatalysis、ACSSustainableChem.Eng.、Organicletters、ChemicalCommunications、JournalofCatalysis等期刊发表论文10多篇。目前在研经费充足，主要从事有机合成方法 … celery artinyaAlthough not practiced under the name, aromatization is a cornerstone of oil refining. One of the major reforming reactions is the dehydrogenation of naphthenes into aromatics. The process, which is catalyzed by platinum, is exemplified in the conversion methylcyclohexane (a naphthene) into toluene (an aromatic). Dehydrocyclization converts paraffins (acyclic hydrocarbons) into a… celery architecture