南京工业大学学报（自然科学版）2023，Vol.45Issue(6)：610-620,11.DOI:10.3969/j.issn.1671-7627.2023.06.003
Co改性Rh/SiO2催化异丁烯氢甲酰化制异戊醛
Co-modified Rh/SiO2 catalyst for hydroformylation of isobutylene to isovaleraldehyde
摘要
Abstract
In order to efficiently react isovaleraldehyde with isobutene and syngas at a lower amount of precious metals,Fe,Co,Ni and Zn-modified Rh/SiO2 catalysts were prepared by conventional impregnation method.The catalyst was characterized by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FT-IR),specific surface area test(BET),H2 programmed temperature reduction(H2-TPR),transmission electron microscopy(TEM)and inductively coupled plasma emission spectroscopy(ICP).The reaction performance of modified Rh/SiO2 catalyst for hydroformylation of isobutene to isovaleraldehyde was studied,and the process conditions such as reaction pressure,reaction temperature,catalyst dosage,reaction time and reaction solvent were optimized.The results showed that with Co as additive,When n(Rh)∶n(Co)was 1∶1,the load(mass fraction)of Rh was 0.1％,the reaction pressure was 5 MPa,the reaction temperature was 100 ℃,the mass ratio of isobutylene to catalyst was 30,the mass concentration of isobutylene was 0.1 g/mL,toluene was the solvent,the stirring rate was 600 r/min and the reaction time was 6 h,The conversion rate of isobutylene was 87.3％and the selectivity of isovaleraldehyde was 97.5％.关键词
异丁烯/异戊醛/氢甲酰化/改性/催化剂Key words
isobutylene/isovaleraldehyde/hydroformylation/modification/catalyst分类
化学化工引用本文复制引用
唐宇航,李维群,朱南生,王培君,丁靖,万辉,管国锋..Co改性Rh/SiO2催化异丁烯氢甲酰化制异戊醛[J].南京工业大学学报（自然科学版）,2023,45(6):610-620,11.基金项目
国家自然科学基金(22078159) （22078159）
