Ce radical est converti en molécule d'hydroperoxyde de cumène C6H5C(CH3)2OOH par capture de l'hydrogène tertiaire benzylique d'une autre molécule de cumène, laquelle est convertie en radical cumène : On maintient pendant ces réactions une pression de 5 atm afin de s'assurer que l'hydroperoxyde de cumène, instable, demeure liquide. Zhigang Lei, Chengna Dai, Yuli Wang and Biaohua Chen. La dernière modification de cette page a été faite le 22 janvier 2020 à 23:08. Son nom provient du cumène, de formule C6H5CH(CH3)2, produit intermédiaire de cette synthèse. Bart A. Thana Maihom, Sippakorn Wannakao, Bundet Boekfa, Jumras Limtrakul. Piboon Pantu, Bundet Boekfa, Boonruen Sunpetch, Jumras Limtrakul. It is found that benzene alkylation with propylene in the ITQ-24 zeolite prefers to occur through the consecutive reaction mechanism. Le procédé au cumène, ou procédé au cumène-phénol, ou encore procédé Hock, est un procédé industriel de production de phénol C 6 H 5 OH et d'acétone CH 3 COCH 3 à partir du benzène C 6 H 6 et du propylène CH 3 –CH=CH 2.Il a été découvert en 1944 par Heinrich Hock [1] et peut-être de façon indépendante dès 1942 par R. Ūdris et P. Sergeyev en URSS [2]. Role of zeolite catalysts for benzene removal from gasoline via alkylation: A review. Miao He, Jie Zhang, Rui Liu, Xiu-Liang Sun, Biao-Hua Chen, Yang-Gang Wang. Density functional study of the activity of gold-supported ZSM-5 zeolites for nitrous oxide decomposition. When an alkaline solution of cumene (isopropyl benzene or 2-Phenylpropane) in sodium carbonate is oxidised by passing air or oxygen in the presence of cobalt naphthenate as a catalyst at 423 K, cumene hydroperoxide is obtained. Layer selection effect on solid state 13C and 15N chemical shifts calculation using ONIOM approach. Structure and Reaction Mechanism of Alkylation of Phenol with Methanol over H-FAU Zeolite: An ONIOM Study. Na Epoxidation Reaction of Unsaturated Hydrocarbons with H2O2 over Defect TS-1 Investigated by ONIOM Method:  Formation of Active Sites and Reaction Mechanisms. Information. L'hydroperoxyde de cumène est ensuite hydrolysé en milieu acide — réarrangement de Hock — pour donner de l'acétone et du phénol. Yu‐Jue Du, Chuan‐Ming Wang, Guang Yang, Wei‐Min Yang. Q:-Give simple chemical tests to distinguish between the following pairs of compounds. ONIOM Study of Isomerization Reactions of Aromatic Hydrocarbons in Acidic Mordenite Zeolite. Dobrowolski, Jacek Kijeński. ADSORPTION IN ZSM-5 ZEOLITE. Berichte der deutschen chemischen Gesellschaft, Manfred Weber, Markus Weber et Michael Kleine-Boymann, Ullmann's Encyclopedia of Industrial Chemistry, https://fr.wikipedia.org/w/index.php?title=Procédé_au_cumène&oldid=166633164, licence Creative Commons attribution, partage dans les mêmes conditions, comment citer les auteurs et mentionner la licence. Insight into the reaction mechanism and charge transfer analysis for the alkylation of benzene with propylene over H-beta zeolite. NANOCAVITY EFFECTS ON N DOI: 10.1021/jp077246b. system. Journal of Computer-Aided Molecular Design. CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION). De Moor, Marie-Françoise Reyniers, Marek Sierka, Joachim Sauer and Guy B. Marin . Find more information about Crossref citation counts. ZHEN-KUN CHU, GANG FU, WEN-PING GUO, XIN XU. Previous Question Next Question. b. Reaction mechanism of benzene alkylation with propylene catalyzed by HZSM-5 zeolite and H-Beta zeolite. Structures and Reaction Mechanisms of Cumene Formation via Benzene Alkylation with Propylene in a Newly Synthesized ITQ-24 Zeolite:  An Embedded ONIOM Study, Laboratory for Computational and Applied Chemistry, Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand, and Center of Nanotechnology, Kasetsart University Research and Development Institute, Kasetsart University, Bangkok 10900, Thailand. jp061644hsi20060316_081859.pdf (15.13 kb), http://pubs.acs.org/page/copyright/permissions.html, https://doi.org/10.1016/j.mtcomm.2020.101757, https://doi.org/10.1016/j.mcat.2018.05.010, https://doi.org/10.1016/j.jcat.2017.09.008, https://doi.org/10.1016/j.mcat.2017.05.001, https://doi.org/10.1016/j.micromeso.2015.02.029, https://doi.org/10.1007/s11224-012-0161-5, https://doi.org/10.1016/j.ssnmr.2013.01.002, https://doi.org/10.3724/SP.J.1088.2012.20346, https://doi.org/10.1016/j.cplett.2012.11.058, https://doi.org/10.1016/j.theochem.2009.11.010, https://doi.org/10.1142/S021963361000558X, https://doi.org/10.1016/j.molcata.2008.07.016, https://doi.org/10.1007/s10822-008-9207-6, https://doi.org/10.1080/00986440801967445, https://doi.org/10.1134/S0965544108030043, https://doi.org/10.1016/j.theochem.2007.12.039, https://doi.org/10.1016/j.catcom.2006.11.038, https://doi.org/10.1016/S0167-2991(07)81045-7. Hybrid QM/MM calculations on the structure and electronic properties of hydrated RNA base pair. O DECOMPOSITION ON DIFFERENT TYPES OF FE-ZEOLITES (Fe-FER, Fe-BEA, Fe-ZSM-5 AND Fe-FAU): A COMBINED THEORETICAL AND EXPERIMENTAL STUDY. Therefore, the general problem of this process is the absence of effective methods to overcome the inhibiting effect of impurities that are present in both initial cumene (sulfur compounds, such as merPETROLEUM CHEMISTRY Vol. Thana Maihom, Michael Probst, Jumras Limtrakul. not otherwise permitted to reproduce, republish, redistribute, or sell any Supporting Information Thana Maihom, Supawadee Namuangruk, Tanin Nanok and Jumras Limtrakul . without permission from the American Chemical Society. For permission to reproduce, republish and Sławomir Ostrowski, Jan Cz. L'essentiel de la production mondiale d'acétone et de phénol repose de nos jours sur cette méthode ; près de 7 millions de tonnes de phénol étaient produits en 2003 par ce procédé[3]. Theoretical Study of Reaction Mechanism of Cyclohexene Aromatization over H-ZSM-5 Zeolite. 47 No. T. Maihom, P. Pantu, C. Tachakritikul, M. Probst and J. Limtrakul . Jordi Toda, Avelino Corma, and German Sastre . Yanyan Guo, Xiaoxiao Du, Liying Liu, Yichun Dong, Zhigang Lei. Upon further treatment of cumene hydroperoxide with dilute acid, we get the phenols. Files available from the ACS website may be downloaded for personal use only. Effect of the Zeolite Nanocavity on the Reaction Mechanism of n-Hexane Cracking: A Density Functional Theory Study. 4 2007 THE CUMENE PROCESS FOR PHENOL… Side-chain alkylation of toluene with propene over a basic catalyst. Comparison of Ethylation at External Surface and Internal Cavity of H‐MCM‐22 Zeolite from Theoretical Calculations. Mengzhao Li, Xiaoyue Yan, Meiyu Zhu, Meiqi Wang, Danhong Zhou. Kasetsart University of Research and Development Institute, Kasetsart University. Diffusion of Trimethylbenzenes and Xylenes in Zeolites with 12- and 10-Ring Channels as Catalyst for Toluene-Trimethylbenzene Transalkylation. To whom correspondence should be addressed. Thana Maihom, Pipat Khongpracha, Jakkapan Sirijaraensre, Jumras Limtrakul. Both consecutive and associative reaction pathways are examined. Le procédé au cumène, ou procédé au cumène-phénol, ou encore procédé Hock, est un procédé industriel de production de phénol C6H5OH et d'acétone CH3COCH3 à partir du benzène C6H6 et du propylène CH3–CH=CH2. EFFECT OF HIGH-LEVEL LAYER SELECTION IN ONIOM ON Hoora Shaghaghi, Hossein Pasha Ebrahimi, Niloufar Bahrami Panah, Mohsen Tafazzoli. Find more information on the Altmetric Attention Score and how the score is calculated. Sławomir Ostrowski, Jan Cz. -2-hexene: a computational study. Department of Chemistry, Kasetsart University. Patipan Charoenwiangnuea, Thana Maihom, Pipat Kongpracha, Jakkapan Sirijaraensre, Jumras Limtrakul. This article is cited by Information about how to use the RightsLink permission system can be found at the Altmetric Attention Score and how the score is calculated. + Dans ce procédé, le benzène et le propylène sont comprimés ensemble à une pression de 30 atm et à une température de 250 °C en présence d'un acide de Lewis servant de catalyseur. L'acide phosphorique H3PO4 est souvent préféré aux halogénures d'aluminium(III) AlX3. Recent advances of pore system construction in zeolite-catalyzed chemical industry processes. Get article recommendations from ACS based on references in your Mendeley library. 4) Preparation of Phenols from Cumene. Marin, M. Waroquier. Find more information about Crossref citation counts.

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