CAJ | 학술논문

通过SEM，TGA，BET比表面积测定，对影响Pd／C催化剂耐用性诸因素进行了研究。表明芳硝基化合物加氢过程中Pd／C催化剂活性衰退的主要原因是反应过程中原料中的杂质在催化剂表面的机械覆盖及高温引起的热衰退所致。改用经精制提纯后的原料，选择适宜的反应条件，可使催化剂的活性及耐用性得到较大改善。本研究以实验室制备的2%Pd／C为催化剂，经提纯的工厂中间体产品m-β-羟乙基砜硝基苯为原料，在65℃、3.5MPa、乙醇为溶剂、原料∶乙醇∶催化剂＝1∶1∶0.05（wt）的条件下反应2h，加氢转化率可达99.7%。催化剂经反复使用5次后，在上述反应条件下反应5h，加氢转化率仍保持81.5%。
통과SEM，TGA，BET비표면적측정，대영향Pd／C최화제내용성제인소진행료연구。표명방초기화합물가경과정중Pd／C최화제활성쇠퇴적주요원인시반응과정중원료중적잡질재최화제표면적궤계복개급고온인기적열쇠퇴소치。개용경정제제순후적원료，선택괄의적반응조건，가사최화제적활성급내용성득도교대개선。본연구이실험실제비적2%Pd／C위최화제，경제순적공엄중간체산품m-β-간을기풍초기분위원료，재65℃、3.5MPa、을순위용제、원료∶을순∶최화제＝1∶1∶0.05（wt）적조건하반응2h，가경전화솔가체99.7%。최화제경반복사용5차후，재상술반응조건하반응5h，가경전화솔잉보지81.5%。
The effect of raw material on activity of Pd／C catalyst for catalytic hydrogenation of m-mononitrophenyl-β-hydroxyethyl sulfone was investigated by SEM，TGA and BET．It was found that impurities in raw material has unfavourable effect on activity and service life of the catalyst．With 2％ Pd／C catalyst and purified feedstocks，and under 70℃，3.5MPa（H２）and alcohol／raw material ratio of 1／1（wt），the conversion of m-mononitrophenyl-β-hydroxyethyl sulfone was 99.7％ with fresh catalyst and 81.5％ after five times of repeated use．