1-丁烯羰基合成戊醛的工艺.pdfVIP

学兔兔 石 油 化 工 2013年第42卷第11期 PETR0CHEMICAL TECHNOLOGY ·1247· 1一丁烯羰基合成戊醛的工艺 李 岳，徐振凯，张凯旋，马海洪，陈勇强 (天津大学 石油化工技术开发中心，天津 300072) [摘要]采用连续实验装置，以1一丁烯和合成气为原料、三苯基膦乙酰丙酮羰基铑为催化剂，经羰基合成反应制备了戊醛。 考察了反应温度、反应压力、催化剂用量及合成气中H：与CO的配比对合成反应的影响。实验结果表明，提高反应温度、增 加反应压力和催化剂用量可明显提高1一丁烯的转化率，反应压力和催化剂含量对戊醛选择性的影响较小；降低反应压力或提 高合成气中H：分压，可显著提高产物中正戊醛的含量。在100℃、1．5 MPa、反应液中铑含量250 gg／g、原料气中n(HE)：n(CO)= 1．9～2．0的条件下，1一丁烯转化率为85％一90％，戊醛选择性在95％以上，产物中正戊醛与2一甲基丁醛的摩尔比为8～11。 [关键词]1一丁烯；合成气；羰基合成；戊醛；铑催化剂 [文章编号]1000—8144(2013)11～1247—04 [中图分类号]TQ 224．1 [文献标志码]A Preparation of Valeraldehyde from 1-Butene by Oxo Synthesis Li Yue，Xu Zhenkai，ZhangKaixuan，MaHaihong，Chen Yongqiang (ResearchDevelopment Center ofPetrochemical Technology，Tianjin University，Tianjin 300072，China) [Abstract]The OXO synthesis of valeraldehyde from 1-butene and syngas with triphenylphosphine rhodium complex as catalyst was studied in a continuous experimental set-up．The effects of reaction temperature，reaction pressure，catalyst content and syngas composition on the OXO synthesis were investigated．The results showed that，raising the reaction temperature，reaction pressure and catalyst content could obviously improve the conversion of 1-butene，the reaction pressure and catalyst content had a little influence on the selectivity to the product valeraldehyde，reducing the reaction pressure or heightening H2 content in the syngas could significantly increase the content of 一valeraldehyde in the products．Under the reaction conditions of reaction temperature 100℃，reaction pressure 1．5 MPa， rhodium concentration 250 gg／g in the reaction