| As we all know, study and development of catalyst are one of the core issues of the modern chemical industry. Nowadays, there are many problems in 4 sets of octanol devices in the current industry such as high energy consumption and high pollution, which is especially prominent in the days of calling energy conservation, green catalysis and green production processes. Therefore, it is a challenging but imperative research to develop a green catalytic process used in octanol devices.First, a rhodium-phosphine complex catalyst HRh(CO)(PPh3)3 was prepared in one-step process. The effects of different hydrogen were investigated on the structure of catalyst. The results showed that with potassium hydroxide as a hydrogen source, HRh(CO)(PPh3)3 can be efficiently synthesized and the utilization ratio of Rh reached about 95%. While with sodium borohydride as a hydrogen source, the product was the mixture of trans-RhCl(CO)(PPh3)2 and HRh(CO)(PPh3)3. The dropping rate of formaldehyde had a significant impact on components of the two products. As the dropping rate of formaldehyde gradually slowed down, the concentration of HRh(CO)(PPh3)3 gradually increased, while the content of trans-RhCl(CO)(PPh3)2 gradually decreased, and the utilization rate of Rh was about 85%. Using hydrogen as a hydrogen source under atmospheric pressure, HRh(CO)(PPh3)3 can not be synthesized, and the product was trans-RhCl(CO)(PPh3)2.Second, the activity of the as-prepared catalysts has been evaluated by hydroformylation of propylene, which was compared with ROPAC used as the industrial catalyst. The ratio of phosphine and rhodium, the concentration of rhodium, temperature and partial pressure of carbon monoxide had great impact on catalytic performance. As-synthesized HRh(CO)(PPh3)3 had better catalytic performances for the hydroformylation of propylene, which was better than ROPAC used as the industrial catalyst under the same conditions. The better conditions of HRh(CO)(PPh3)3 in catalyzing hydroformylation of propylene were that temperature was 90℃, the partial pressure of carbon monoxide was 0.1 MPa, the ratio of phosphine and rhodium was 300 and the concentration of rhodium was 300 ppm. Under these conditions, the conversion of propylene was 71.7% within 2h and the n/i of product was 8.10 while the average reaction rate was 0.042 mol·L-1·min-1 and the conversion frequency of propylene to butyraldehyde was 864 h-1;Last, the dual-function catalyst was prepared by grafting organoamine and rhodium-phosphine HRh(CO)(PPh3)3 on the MCM-41 surface. And the impact of types of amines, nitrogen amount and the amount of rhodium on the catalyst properties was investigated. The results were summarized as follows: dual-function catalyst MCM-41-NH2-Rh-P was obtained by grafting method, and the crystal structure of MCM-41 had not been destroyed, but the surface area and pore diameter were reduced. One-pot preparation of 2-ethylhexenal from propylene was achieved by as-mentioned catalyst. The appropriate ratio of two active species was that the content of nitrogen (primary amine) was about 1.73% and rhodium content was about 0.19%. And the field of 2-ethylhexenal was up to 75.0% within 6h under this condition.
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