Thermoregulated phase-separable Ru-3(CO)(12)/PETPP (PETPP=P[p-C6H4O (CH2CH2O)(n) H](3), n=6) complex catalyst was first applied in the hydrogenation of styrene. Under the conditions: P(H-2)=2.0MPa, T=90degreesC, styre...Thermoregulated phase-separable Ru-3(CO)(12)/PETPP (PETPP=P[p-C6H4O (CH2CH2O)(n) H](3), n=6) complex catalyst was first applied in the hydrogenation of styrene. Under the conditions: P(H-2)=2.0MPa, T=90degreesC, styrene could be completely transferred and the yield of ethylbenzene reached up to 99.5%. After simple decantation, the catalyst could be reused for ten times without decreasing in activity.展开更多
Effects on the recycling efficiency of thermoregulated phase-separable Rh/PETPP (P-[p-C6H4O(CH2CH2O)nH]3, N=3n) complex catalyst involved in hydroformylation of 1-decene are for the first time presented. It was found...Effects on the recycling efficiency of thermoregulated phase-separable Rh/PETPP (P-[p-C6H4O(CH2CH2O)nH]3, N=3n) complex catalyst involved in hydroformylation of 1-decene are for the first time presented. It was found that the loss of Rh is dependent greatly on the composition of phosphine ligand PETPP and the organic solvent employed in the reaction.展开更多
Polyether moiety was introduced to the phosphinite and the phosphinite modified rhodium complex formed in situ was highly active in the hydroformylation of higher olefins in organic monophase system. After reaction, ...Polyether moiety was introduced to the phosphinite and the phosphinite modified rhodium complex formed in situ was highly active in the hydroformylation of higher olefins in organic monophase system. After reaction, on cooling to room temperature, the catalyst could precipitate out from organic phase and was easily separated by decantation and reused six times without obvious decreasing in activity.展开更多
Polyether-tailored phosphite modified rhodium complex formed in situ was highly active in the hydroformylation of oleyl alcohol in nonaqueous phosphite/heptane system where the phosphite acted both as the ligand and t...Polyether-tailored phosphite modified rhodium complex formed in situ was highly active in the hydroformylation of oleyl alcohol in nonaqueous phosphite/heptane system where the phosphite acted both as the ligand and the second phase. This catalyst was easily separated by simple decantation and can be used for five times with only a slight decrease in activity.展开更多
The promoting effect of ethanol on the synthesis of N-（2-methylphenyl）hydroxylamine from o-nitrotoluene in Zn/H2O/CO2 system was observed.By adding appropriate amount of ethanol,the selectivity of N-（2-methylphenyl...The promoting effect of ethanol on the synthesis of N-（2-methylphenyl）hydroxylamine from o-nitrotoluene in Zn/H2O/CO2 system was observed.By adding appropriate amount of ethanol,the selectivity of N-（2-methylphenyl）hydroxylamine increased from 71%to 90%when the reduction was carried out at 25℃under normal pressure of CO2.展开更多
基金We are grateful for the financial support from the National Natural Science Foundation of China(Grant no.29906001).
文摘Thermoregulated phase-separable Ru-3(CO)(12)/PETPP (PETPP=P[p-C6H4O (CH2CH2O)(n) H](3), n=6) complex catalyst was first applied in the hydrogenation of styrene. Under the conditions: P(H-2)=2.0MPa, T=90degreesC, styrene could be completely transferred and the yield of ethylbenzene reached up to 99.5%. After simple decantation, the catalyst could be reused for ten times without decreasing in activity.
基金The financial support of the National Natural Science Foundation of China (grant no. 29906001) and the Research Institute of Petroleum Processing China Petroleum & Chemical Corporation is gratefully acknowledged.
文摘Effects on the recycling efficiency of thermoregulated phase-separable Rh/PETPP (P-[p-C6H4O(CH2CH2O)nH]3, N=3n) complex catalyst involved in hydroformylation of 1-decene are for the first time presented. It was found that the loss of Rh is dependent greatly on the composition of phosphine ligand PETPP and the organic solvent employed in the reaction.
基金This work was supported by the National Natural Science Foundation of China (Grant No. 29906001)and the Research Institute of Petroleum Processing.
文摘Polyether moiety was introduced to the phosphinite and the phosphinite modified rhodium complex formed in situ was highly active in the hydroformylation of higher olefins in organic monophase system. After reaction, on cooling to room temperature, the catalyst could precipitate out from organic phase and was easily separated by decantation and reused six times without obvious decreasing in activity.
基金The authors are grateful to the financial support from the National Natural Science Foundation of China(Grant No.29906001)
文摘Polyether-tailored phosphite modified rhodium complex formed in situ was highly active in the hydroformylation of oleyl alcohol in nonaqueous phosphite/heptane system where the phosphite acted both as the ligand and the second phase. This catalyst was easily separated by simple decantation and can be used for five times with only a slight decrease in activity.
基金supported by the Doctoral Fund of Ministry of Education of China(No.20070141046)the Fund of Education Department of Liaoning Province(No.[2006]124)
文摘The promoting effect of ethanol on the synthesis of N-（2-methylphenyl）hydroxylamine from o-nitrotoluene in Zn/H2O/CO2 system was observed.By adding appropriate amount of ethanol,the selectivity of N-（2-methylphenyl）hydroxylamine increased from 71%to 90%when the reduction was carried out at 25℃under normal pressure of CO2.
