CAJ | 학술논문

通过离子交换法制备了KX 和KZSM-5催化剂，浸渍法制备了1%K2O-KX和3%K2O-KZSM-5催化剂，机械混磨法制备了KX/3%K2O-KZSM-5催化剂，并考察了其甲苯甲醇烷基化反应的催化性能。甲苯甲醇在碱性较强的KX上发生侧链烷基化反应生成苯乙烯和乙苯，同时伴随着甲醇大量分解生成副产物CO和H2，在碱性较弱的KZSM-5上发生苯环烷基化反应生成二甲苯。 KX负载1%质量分数的K2O后甲苯甲醇侧链烷基化反应的活性明显提高，但甲醇分解也更加严重。 KX与负载3%质量分数的K2O的KZSM-5均匀机械混合制得催化剂，表现出较高的甲苯甲醇侧链烷基化反应的活性，且通过对反应物的选择性吸附在保持与1%K2O-KX活性相同的同时使甲醇的分解得到一定程度的抑制。
통과리자교환법제비료KX 화KZSM-5최화제，침지법제비료1%K2O-KX화3%K2O-KZSM-5최화제，궤계혼마법제비료KX/3%K2O-KZSM-5최화제，병고찰료기갑분갑순완기화반응적최화성능。갑분갑순재감성교강적KX상발생측련완기화반응생성분을희화을분，동시반수착갑순대량분해생성부산물CO화H2，재감성교약적KZSM-5상발생분배완기화반응생성이갑분。 KX부재1%질량분수적K2O후갑분갑순측련완기화반응적활성명현제고，단갑순분해야경가엄중。 KX여부재3%질량분수적K2O적KZSM-5균균궤계혼합제득최화제，표현출교고적갑분갑순측련완기화반응적활성，차통과대반응물적선택성흡부재보지여1%K2O-KX활성상동적동시사갑순적분해득도일정정도적억제。
KX and KZSM-5 catalysts were prepared by ion exchange method, 1%K2O-KX catalyst was prepared by impregnation method, and KX/3%K2O-KZSM-5 catalyst was prepared by mechanically blending and grinding. Their catalytic performances for alkylation of toluene with methanol were investigated. For the stronger basic KX, the main products were styrene and ethylbenzene with substantial byproduct CO and H2 from methanol decomposition. For the weaker basic KZSM-5, the main product was xylene. The catalytic activity of 1%K2O-KX were higher than that of KX, but more amount of methanol decomposed to CO and H2. The catalytic activity of KX/3%K2O-KZSM-5 was similar to that of 1%K2O-KX, however, it could inhibit the decomposition of methanol due to its selective adsorption to the reactants.