Reduction of the Phillips catalyst by various olefins: Stoichiometry, thermochemistry, reaction products and polymerization activity
Reduction of the Phillips catalyst by various olefins: Stoichiometry, thermochemistry, reaction products and polymerization activity
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各种烯烃对菲利普斯催化剂的还原:化学计量、热化学、反应产物和聚合活性
DOI:
10.1016/j.jcat.2016.10.031
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发表时间:
2016
影响因子:
7.3
通讯作者:
McDaniel, Max P.
中科院分区:
文献类型:
--
作者:
Potter, Kelsey C.;Beckerle, Connor W.;Jentoft, Friederike C.;Schwerdtfeger, Eric;McDaniel, Max P.
The adsorption, reaction and desorption of ethylene or hexenes on Cr(VI)/SiO2containing 1 or 3 wt.% chromium were monitored by thermogravimetry, differential scanning calorimetry and mass spectrometry. Reaction of Cr(VI)/SiO2with ethylene at a temperature of 200 °C always included some oligomerization, making it impossible to identify the stoichiometry of the initial redox reaction. Reaction of Cr(VI)/SiO2with 1-hexene or cyclohexene at 150 °C indicated an adsorption stoichiometry of one olefin per chromium. Heats of reaction were consistent with oxidation of the olefin to an aldehyde or ketone, or even to a carboxylic acid or ester. Oxidation products were retained on the surface. Thermal desorption of surface products resulted in CO2evolution at temperatures of 265–285 and 390–415 °C, with the co-products indicating decomposition of formate and acetate species, respectively. Reduction of Cr(VI) with ethylene led to sites active for ethylene polymerization after thermal desorption of the redox products, whereas reduction with hexenes did not generate active sites irrespective of thermal desorption of products.
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影响因子:
7.3
作者:
M. Gierada;P. Michorczyk;F. Tielens;J. Handzlik
通讯作者:
M. Gierada;P. Michorczyk;F. Tielens;J. Handzlik
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
T. Arii;Y. Sawada;K. Iizumi;K. Kudaka;Shigeyuki Seki
通讯作者:
Shigeyuki Seki
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
S. Augustine;J. Blitz
通讯作者:
J. Blitz
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
B. Weckhuysen;R. Schoonheydt;J. Jehng;I. Wachs;S. Cho;R. Ryoo;S. Kijlstra;E. Poels
通讯作者:
E. Poels
DOI:
10.1016/0020-1650(68)80046-7
发表时间:
1968
期刊:
Inorganic and Nuclear Chemistry Letters
影响因子:
--
作者:
Von H. Krauss;H. Stach
通讯作者:
H. Stach