Lim, Weon Cheol Cho, Joo Hyun Han, Joon Soo Yoo, Bok Ryul 2024-01-21T00:30:32Z 2024-01-21T00:30:32Z 2021-09-02 2007-10-20 0253-2964 https://pubs.kist.re.kr/handle/201004/134034 Direct reaction of elemental silicon with a gaseous mixture of isopropyl chloride (1) and hydrogen chloride in the presence of copper catalyst using a stirred bed reactor equipped with a spiral band agitator gave isopropyldichlorosilane having a Si-H bond (2a) as a major product and isopropyltrichlorosilane (2b) along with chlorosilanes, trichlorosilane and tetrachlorosilane. A process for production of 2a was maximized using the 1:0.5 mole ratio of I to HCl and smaller size of elemental silicon at a reaction temperature of 220 degrees C. When a reaction was carried out by feeding a gaseous mixture of 1 [12.9 g/h (0.164 mol/h)] and HCl [2.98 g/h (0.082 mol/h)] to a contact mixture of elemental silicon (360 g) and copper (40 g) under the optimum condition for 45 h, 2a among volatile products kept up about 82 mol % until 35 It and then slowly decreased down 68 mol % in 45 h reaction. Finally 2a was obtained in 38% isolated yield (based on 1 used) with an 85% consumption of elemental silicon in a 45 h reaction. In addition to 2a, 2b was obtained as minor product along with chlorosilanes, trichlorosilane, and tetrachlorosilane. The decomposition of I was suppressed and the production of 2a improved by adding HCl to 1. English WILEY-V C H VERLAG GMBH HYDROGEN-CHLORIDE Synthesis of isopropyldichlorosilane by direct process Article 1 BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.28, no.10, pp.1661 - 1664 BULLETIN OF THE KOREAN CHEMICAL SOCIETY 28 10 1661 1664 scie scopus kci ART001092887 000251301600009 2-s2.0-36049045838 Chemistry, Multidisciplinary Chemistry Article HYDROGEN-CHLORIDE direct process isopropyldichlorosilane hydrosilane elemental silicon copper