CAJ | 학술논문

在AB-97型分子筛催化剂上对苯/乙烯烷基化制乙苯的重要副产物二甲苯的生成规律进行了系统研究，建立了反应动力学模型。降低温度及乙烯分压可抑制二甲苯的生成，并提出了二甲苯生成的机理。试验证实了结焦过程生成的微量游离氢的存在是生成二甲苯的必要条件。二甲苯生成反应的模拟计算结果与工业生产的结果相吻合，二甲苯的质量分数可控制在0.2％以内
재AB-97형분자사최화제상대분/을희완기화제을분적중요부산물이갑분적생성규률진행료계통연구，건립료반응동역학모형。강저온도급을희분압가억제이갑분적생성，병제출료이갑분생성적궤리。시험증실료결초과정생성적미량유리경적존재시생성이갑분적필요조건。이갑분생성반응적모의계산결과여공업생산적결과상문합，이갑분적질량분수가공제재0.2％이내
The mechanism of formation of xylene as an important byproduct in the vapor-phase alkylation of benzene with ethylene over AB-97 zeolite has been studied systematically in a gradientless reactor, with reaction kinetics established accordingly. Reducing reaction temperature and partial pressure of ethylene can restrain the formation of xylene. A mechanism for the formation of xylene was put forward. It is confirmed by experiment that the existence of atomic hydrogen generated from the coking process constitutes a requirement for the formation of xylene. The result of simulated xylene formation conforms with that of industrial production, and xylene concentration can be controlled below 0.2 %