摘要
制备了用于丙烯氢甲酰化反应的Rh/SBA-15和PPh3修饰的PPh3-Rh/SBA-15催化剂.应用原位变温高压核磁共振技术,对比研究了丙烯在Rh/SBA-15和PPh3修饰的多相催化剂PPh3-Rh/SBA-15上的氢甲酰化反应,实现了高压条件下催化反应的原位固体核磁共振表征.13CMASNMR研究结果表明:在1.0MPa的反应压力下,随着反应温度升高丙烯与合成气在Rh/SBA-15催化剂上可转化生成丁醛,而PPh3配体修饰的PPh3-Rh/SBA-15催化剂上丁醛产物的正异比显著提高.
Rh/SBA-15 and ligand （triphenyl phosphine PPh3） modified heterogeneous PPh3-Rh/SBA-15 catalysts for the reaction of propene hydroformylation were prepared. The reaction process of propene hydroformylation on the Rh/SBA-15 and PPh3-Rh/SBA-15 catalysts was studied by in situ high-pressure（HP）MAS NMR techniques under the batch like conditions. ^13C MAS NMR spectra indicated that, with increasing temperature, propene and syngas could be converted into hutyraldehyde on Rh/SBA-15 catalyst while the PPh3 modified heterogeneous PPh3-Rh/SBA 15 catalyst exhibited higher n/i ratio of butyraldehyde at 1.0 MPa.
出处
《波谱学杂志》
CAS
CSCD
北大核心
2009年第1期37-43,共7页
Chinese Journal of Magnetic Resonance
基金
国家自然科学基金资助项目(20673111)
