CAJ | 학술논문

以 N，N，N-三甲基-1-金刚烷基氢氧化铵为模板剂合成了 SSZ-13分子筛催化剂，并以三乙胺（TEA）为模板剂合成了 SAPO-34分子筛催化剂.采用 X 射线衍射、扫描电镜、低温氮吸附等方法对催化剂进行了表征.在固定床反应器中考察了这2种催化剂在不同条件下对乙醇脱水反应的催化活性.结果表明：所制备的 SSZ-13分子筛具有典型的 CHA 型结构，当反应温度为350℃时，乙醇平均转化率和乙烯平均选择性分别为98.8%和99.2%，而在相同条件下，以 SAPO-34为催化剂时乙醇平均转化率和乙烯平均选择性分别仅为78.2%和53.5%.
이 N，N，N-삼갑기-1-금강완기경양화안위모판제합성료 SSZ-13분자사최화제，병이삼을알（TEA）위모판제합성료 SAPO-34분자사최화제.채용 X 사선연사、소묘전경、저온담흡부등방법대최화제진행료표정.재고정상반응기중고찰료저2충최화제재불동조건하대을순탈수반응적최화활성.결과표명：소제비적 SSZ-13분자사구유전형적 CHA 형결구，당반응온도위350℃시，을순평균전화솔화을희평균선택성분별위98.8%화99.2%，이재상동조건하，이 SAPO-34위최화제시을순평균전화솔화을희평균선택성분별부위78.2%화53.5%.
SSZ-13 catalyst was synthetised with N, N, N -trimethyl alkyl ammonium hydroxide as template. SAPO -34 molecular sieve was synthetised with triethylamine (TEA) . The the catalysts were characterized by XRD, SEM, low-temperature N2 adsorption. Then studied the catalytic properties of ethanol dehydration reactions at different conditions for the catalyst prepared in a fixed bed reactor were studied. The results indicate that the prepared SSZ-13 molecular sieve belongs to chabazite structure, in the process of ethanol dehydration to ethylene, the average conversion of ethanol and average selectivity of ethylene is 98.8% and 99.2% at 350 ℃ . In the same conditions, the average conversion of ethanol and average selectivity of ethylene is 78.2% and 53.5% when using SAPO-34 molecular sieve as a catalyst of ethanol dehydration to ethylene.