摘要
采用间歇式羰基合成实验装置,以混合丁烯和合成气为原料、铑复合物(乙酰丙酮二羰基铑)为催化剂、三齿膦化合物为配体,经羰基合成反应制备戊醛,考察了反应温度、反应压力、催化剂用量(以反应液中的铑含量计)、不同原料组分等对羰基合成反应的影响。实验结果表明,采用铑复合物催化剂和三齿膦配体的催化体系,可使混合丁烯直接经羰基合成反应生成戊醛。在该催化体系中,混合丁烯原料中的不同组分(1-丁烯和顺、反-2-丁烯)具有不同的反应活性,其中反-2-丁烯的反应活性最差,它主导了整个反应速率。在125℃、1.5 MPa、铑含量430μg/g的条件下,混合丁烯转化率为90%,戊醛选择性为83%,产物中正戊醛与2-甲基丁醛的摩尔比为13.5。
The synthesis of valeraldehyde from butene mixture and syngas through oxo-reactions with rhodium complex（rhodium dicarbonyl acetylacetonate） as the catalyst and tridentate phosphine as the ligand was studied in a batch experimental installation. The effects of reaction temperature,pressure,catalyst content and different raw materials on the oxo synthesis were investigated. The results showed that valeraldehyde could directly be synthesized from the butene mixture. And it was indicated that different butene components,namely 1-butene,cis-2-butene and trans-2-butene,had different reactivity in the catalyst system. It was found that trans-2-butene was the most difficultly reactive in the butene mixture,which was the controlling step in the oxo-reaction process. Under the reaction conditions of temperature 125 ℃,pressure 1.5 MPa and rhodium content 430 μg/g（based on the mass of reaction mixture）,the conversion of the butene mixture,selectivity to valeraldehyde and mole ratio of n-valeraldehyde to 2-methyl butaldehyde in the products reached 90%,83% and 13.5,respectively.
出处
《石油化工》
CAS
CSCD
北大核心
2015年第8期912-918,共7页
Petrochemical Technology
关键词
混合丁烯
铑复合物催化剂
乙酰丙酮二羰基铑
三齿膦化合物
羰基合成
戊醛
butene mixture
rhodium complex catalyst
rhodium dicarbonyl acetylacetonate
tridentate phosphine
oxo synthesis
valeraldehyde
