天津大学学报
天津大學學報
천진대학학보
Journal of Tianjin University
2015年
10期
908-913
,共6页
三氯氢硅%歧化反应%催化剂%动力学
三氯氫硅%歧化反應%催化劑%動力學
삼록경규%기화반응%최화제%동역학
trichlorosilane%redistribution reaction%catalyst%kinetics
在高压间歇釜式反应器中，考察了6种催化剂对三氯氢硅(TCS)歧化反应的催化效果．选取催化效果最佳的大孔弱碱性阴离子交换树脂 PA100为催化剂，研究了催化剂用量、颗粒尺寸、温度和反应时间对三氯氢硅歧化反应的影响，并通过测定不同反应条件下三氯化硅转化率随时间的变化，获得三氯氢硅歧化反应的动力学模型．结果表明，在催化剂用量为0.133,4,gcat/gTCS、温度为343.15,K 的条件下 PA100的催化活性最好．获得的动力学模型表明，三氯氢硅歧化反应为二级反应，正反应的指前因子和活化能分别为5.292,m3/(kmol·s)和38.498,kJ/mol，逆反应的指前因子和活化能分别为4.779,m3/(kmol·s)和27.387,kJ/mol．在实验条件范围内对获得的动力学方程进行了验证，误差小于5%，表明模型具有较好的拟合精度，能准确反映三氯氢硅歧化反应过程及其动力学特征．
在高壓間歇釜式反應器中，攷察瞭6種催化劑對三氯氫硅(TCS)歧化反應的催化效果．選取催化效果最佳的大孔弱堿性陰離子交換樹脂 PA100為催化劑，研究瞭催化劑用量、顆粒呎吋、溫度和反應時間對三氯氫硅歧化反應的影響，併通過測定不同反應條件下三氯化硅轉化率隨時間的變化，穫得三氯氫硅歧化反應的動力學模型．結果錶明，在催化劑用量為0.133,4,gcat/gTCS、溫度為343.15,K 的條件下 PA100的催化活性最好．穫得的動力學模型錶明，三氯氫硅歧化反應為二級反應，正反應的指前因子和活化能分彆為5.292,m3/(kmol·s)和38.498,kJ/mol，逆反應的指前因子和活化能分彆為4.779,m3/(kmol·s)和27.387,kJ/mol．在實驗條件範圍內對穫得的動力學方程進行瞭驗證，誤差小于5%，錶明模型具有較好的擬閤精度，能準確反映三氯氫硅歧化反應過程及其動力學特徵．
재고압간헐부식반응기중，고찰료6충최화제대삼록경규(TCS)기화반응적최화효과．선취최화효과최가적대공약감성음리자교환수지 PA100위최화제，연구료최화제용량、과립척촌、온도화반응시간대삼록경규기화반응적영향，병통과측정불동반응조건하삼록화규전화솔수시간적변화，획득삼록경규기화반응적동역학모형．결과표명，재최화제용량위0.133,4,gcat/gTCS、온도위343.15,K 적조건하 PA100적최화활성최호．획득적동역학모형표명，삼록경규기화반응위이급반응，정반응적지전인자화활화능분별위5.292,m3/(kmol·s)화38.498,kJ/mol，역반응적지전인자화활화능분별위4.779,m3/(kmol·s)화27.387,kJ/mol．재실험조건범위내대획득적동역학방정진행료험증，오차소우5%，표명모형구유교호적의합정도，능준학반영삼록경규기화반응과정급기동역학특정．
The redistribution reaction of trichlorosilane (TCS)was studied by using six different kinds of catalyst in a high pressure batch reactor.The catalytic activity of the macroporous weakly basicanion acid exchange resin PA100 is the best, so PA100 was selected as the catalyst. Effects of catalyst quantity,particle size, operating temperature and reaction time were examined. The reaction kinetic parameters were obtained by measuring the change of trichlorosi-lane conversion with reaction time. It has been found that the best condition for the conversion of trichlorosilane is at 343.15 K with a mass dosage of 0.133 4 gcat/gTCS by using PA100 as the catalyst. The kinetic data analysis suggeststhat the redistribution reaction of trichlorosilane is second order for the forward reaction and the backward reaction. The pre-exponential factor and activation energy are 5.292 m3/(kmol·s) and 38.498 kJ/mol for the forward reaction,and the pre-exponential factor and activation energy are 4.779 m3/(kmol·s) and 27.387 kJ/mol for the backward reaction. Comparing the calculated values obtained by using the obtained kinetic equation with the experimental values, the margin of error is less than 5%. The results indicate that the model exhibits high fitting precision for simulation, which can well reflect the reaction process and kinetics of the redistribution reaction of trichlorosilane.
