用化学复合镀方法在45钢基体上镀覆Ni P 石墨复合镀层,研究了在不同施镀工艺条件下,对镀层中石墨粒子体积分数的影响,结果表明,当镀液中石墨质量浓度约为2g L、搅拌速度420r min、施镀温度为80℃、镀液的pH值为1时,镀层中石墨的体积... 用化学复合镀方法在45钢基体上镀覆Ni P 石墨复合镀层,研究了在不同施镀工艺条件下,对镀层中石墨粒子体积分数的影响,结果表明,当镀液中石墨质量浓度约为2g L、搅拌速度420r min、施镀温度为80℃、镀液的pH值为1时,镀层中石墨的体积分数达到最高。展开更多
Reported in this paper is the synthesis of Chalcone by microwave irradiation and using KF-Al 2O 3 catalyst.As compared with conventional method,the reaction time was reduced considerably yet the yidld was good.
It was found that photopromoted carbonylation of olefins and CO 2 under ambient conditions could be catalyzed by Co(OAc) 2, Co(acac) 2, CoSalen, Cobalt picolinic ester and[Co(14)-4,11-diene-N 4]I 2[5,7,7,12,14,14-hexa...It was found that photopromoted carbonylation of olefins and CO 2 under ambient conditions could be catalyzed by Co(OAc) 2, Co(acac) 2, CoSalen, Cobalt picolinic ester and[Co(14)-4,11-diene-N 4]I 2[5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-4,11-dieneatocobalt(Ⅱ)]. The carbonylation of cyclohexene gave some by-products of cyclo-C 6H 11-CH 2OH, cyclo-C 6H 11-CHO and cyclo-C 6H 11-COCH 3, which were established by labelling studies with 13CO 2, 13CH 3OH, CD 3OD and CD 3COCD 3. CH 3(CH 2) 7-CH 2OH, CH 3(CH 2) 7-CHO and CH 3(CH 2) 7-COCH 3 were also confirmed as the by-products of carbonylation of 1-octene.展开更多
文摘Reported in this paper is the synthesis of Chalcone by microwave irradiation and using KF-Al 2O 3 catalyst.As compared with conventional method,the reaction time was reduced considerably yet the yidld was good.
文摘It was found that photopromoted carbonylation of olefins and CO 2 under ambient conditions could be catalyzed by Co(OAc) 2, Co(acac) 2, CoSalen, Cobalt picolinic ester and[Co(14)-4,11-diene-N 4]I 2[5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-4,11-dieneatocobalt(Ⅱ)]. The carbonylation of cyclohexene gave some by-products of cyclo-C 6H 11-CH 2OH, cyclo-C 6H 11-CHO and cyclo-C 6H 11-COCH 3, which were established by labelling studies with 13CO 2, 13CH 3OH, CD 3OD and CD 3COCD 3. CH 3(CH 2) 7-CH 2OH, CH 3(CH 2) 7-CHO and CH 3(CH 2) 7-COCH 3 were also confirmed as the by-products of carbonylation of 1-octene.
