CAJ | 학술논문

采用物理吸附、X 射线衍射、扫描电镜、X 射线能谱及等离子体发射光谱法对在美罗培南合成过程中失活的 Pd / C 催化剂比表面积、孔容、孔径、钯粒径形貌、表面元素及钯含量的变化进行分析，对催化剂的失活原因及再生方法进行研究。结果表明，催化剂在反应过程中吸附体系物质对钯活性中心的覆盖包裹及金属钯的少量流失是催化剂失活的主要原因。以30%四氢呋喃水溶液在超声条件下洗涤可以部分去除催化剂表面沉积的有机物，同时补加质量分数30%催化剂时，再次使用时效果较好。
채용물리흡부、X 사선연사、소묘전경、X 사선능보급등리자체발사광보법대재미라배남합성과정중실활적 Pd / C 최화제비표면적、공용、공경、파립경형모、표면원소급파함량적변화진행분석，대최화제적실활원인급재생방법진행연구。결과표명，최화제재반응과정중흡부체계물질대파활성중심적복개포과급금속파적소량류실시최화제실활적주요원인。이30%사경부남수용액재초성조건하세조가이부분거제최화제표면침적적유궤물，동시보가질량분수30%최화제시，재차사용시효과교호。
The reasons for the deactivation and the regeneration methods of Pd/ C catalysts for synthesis of meropenem were investigated. The BET sUrface area,pore volUme,average pore diameter,micro-morphology of palladiUm particles,sUrface elements and active component palladiUm contents of deactivated Pd / C catalyst were analyzed by means of physisorption,XPD,SEM,XPS and ICP. The resUlts showed that the main reasons for deactivation of Pd / C catalyst were that palladiUm active centers were covered and coated by reactants and prodUcts and a small amoUnt of palladiUm was lost. The adsorbates on the sUrface of the Used Pd / C catalyst coUld be partly cleaned Up by washing with 30% THF solUtion Under UltrasoUnd,and it coUld get the same effects as the fresh catalyst when the sUpplementary addition amoUnt was 30% of the catalyst dosage.