Gas-phase kinetics of pyrolysis of 1,2-dimethylcyclopropene
作者:Henning Hopf、Gerhard Wachholz、Robin Walsh
DOI:10.1039/p29860001103
日期:——
The pyrolysis of 1,2-dimethylcyclopropene has been studied in the temperature range 260–300 °C. The sole product is isoprene and material recovery was complete to within ±3.5%. The reaction obeyed first-order kinetics and appeared to be homogeneous in a hexamethyldisilazane-conditioned Pyrex reactor, although surface catalysis could not be eliminated in a packed vessel. At 12 Torr (close to the high-pressure
在260–300°C的温度范围内研究了1,2-二甲基环丙烯的热解。唯一的产品是异戊二烯,材料回收率完全在±3.5%以内。该反应服从一级动力学,并且在六甲基二硅氮烷条件下的Pyrex反应器中似乎是均相的,尽管在填充容器中不能消除表面催化作用。在12 Torr(接近高压极限)时,速率常数符合Arrhenius方程(i)。log(k / s –1)=(13.63±0.19)–(183.7±2.0 kJ mol –1)/ RT ln10(i)这项研究为甲基取代基对环丙烯异构化的去活化作用提供了进一步的证据。
Highly stereoselective reactions of carbanions of dithiabicyclo[3.1.0]hexane derivatives
Reactions des derives lithies du dithia-7,9tricyclo [4.3.1.0] decadiene-2,4 et du dimethyl-1,5 dithia-2,4bicyclo [3.1.0] hexane avec des electrophiles tels que le dioxyde de carbone, le benzaldehyde, les halogenures d'alkyles et DCl
反应 des 衍生 lithies du dithia-7,9tricyclo [4.3.1.0] decadiene-2,4 et du 二甲基-1,5 dithia-2,4bicyclo [3.1.0] 己烷 avec deselectrophiles tels que le dioxyde de carbone, le benzaldehyde , les 卤代烷烃 et DCl
[EN] ZEOLITIC CATALYTIC CONVERSION OF ALCOHOLS TO HYDROCARBONS<br/>[FR] CONVERSION CATALYTIQUE ZÉOLITIQUE D'ALCOOLS EN HYDROCARBURES
申请人:UT BATTELLE LLC
公开号:WO2012174205A1
公开(公告)日:2012-12-20
A method for converting an alcohol to a hydrocarbon, the method comprising contacting said alcohol with a metal-loaded zeolite catalyst at a temperature of at least 100°C and up to 550°C, wherein said alcohol can be produced by a fermentation process, said metal is a positively-charged metal ion, and said metal-loaded zeolite catalyst is catalytically active for converting said alcohol to said hydrocarbon.