Reference

Commercial trial of oligomerization of 2-butene over catalyst T-99

All Rights Reserved. Commercial trial of oligomerization of 2-butene over catalyst T-99. Yang, Yuming; Miao, Wei; Gao, Yujie; Dong, Haiming (Refinery of PetroChina Lanzhou Petrochemical Company, Lanzhou 730060, Peop.In this study， 11071-47-9 and 320381-28-0 are also used. Rep. China). Shiyou Lianzhi Yu Huagong, 36(10), 54-57 (Chinese) 2005 Shiyou Lianzhi Yu Huagong Zazhishe. CODEN: SLYHEE. ISSN: 1005-2399. DOCUMENT TYPE: Journal CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) The com. trial of 2-butene oligomerization over catalyst T-99 for producing high octane no. gasoline component was carried on the propylene oligomerization unit in the refinery of Lanzhou Petrochem. Company. The once through conversion of 2-butene was higher than the required index of 76%; the selectivity of isooctene in the gasoline component was 61.23-72.04%; and the MON and RON of the gasoline component were 81.0-83.6 and 95.0-104.0, resp. Prodn. of high addnl. value product was realized by using 2-butene, which opened a route for utilization of 2-butene. The liq. yield of oligomerization over catalyst T-99 was 1,100 kg/kg, which was much higher than 110 kg/kg of the traditional catalyst. .

Homogeneous catalytic hydroformylation of 1-octene in CO2-expanded solvent media

Homogeneous catalytic hydroformylation of 1-octene in CO2-expanded solvent media. Jin, Hong; Subramaniam, Bala (Department of Chemical and Petroleum Engineering, Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, KS 66045, USA). Chemical Engineering Science, 59(22-23), 4887-4893 (English) 2004 Elsevier Ltd. CODEN: CESCAC. ISSN: 0009-2509. DOCUMENT TYPE: Journal CA Section: 45 (Industrial Organic Chemicals, Leather, Fats, and Waxes) CO2-expanded liqs. (CXLs) represent a continuum of reaction media that combine the reaction benefits provided by org. solvents and the environmental benefits provided by compressed CO2 (liq. and scCO2) in an optimal manner. Homogeneous hydroformylation of 1-octene using an unmodified rhodium catalyst (Rh(acac)(CO)2) was successfully demonstrated employing CXLs as reaction media. At temps. of 30 and 60°, the turnover nos. (TONs) for aldehyde formation in CO2-expanded acetone were up to fourfold higher than those obtained in either neat acetone or compressed CO2. The higher TON in CXLs is attributed to enhanced syngas soly. in CXL (compared to neat solvent) while maintaining complete miscibility of the transition metal catalyst complex (due to the presence of the neat solvent). The demonstrated advantages of using CXLs include significant replacement of conventional solvents (up to 80% by vol.) by environmentally benign CO2 and process intensification at relatively mild pressures (compared to those required with scCO2). 11071-47-9 and 75-05-8 are also in the experiment. The regioselectivity towards linear and branched aldehydes (n/iso ratio) remained unaffected by the change in either the solvent media or the temp. The obsd. effects of temp. and H2 concn. in CXL media were similar to those reported in the literature: lower temps. favored the selectivity toward the aldehydes while an increase in H2 concn. resulted in a higher reaction rate. These first results point to the need for fundamental investigations of the catalyst and reactant solubilities and of the underlying reaction mechanism in CXLs to better understand and exploit these promising reaction media in catalytic hydroformylations. .