钯/碳催化剂的预处理对催化加氢制备4,4′-二氨基二苯乙烯-2,2′-二磺酸的影响  

INFLUENCE OF PRETREATMENT OF Pd/C ON DSD ACID BY HYDROGENATION

作　　者：史天兵[1] 陈宏博[1] 

机构地区：[1]大连理工大学精细化工国家重点实验室,辽宁大连116012

出　　处：《精细石油化工》2010年第3期12-14,共3页Speciality Petrochemicals

摘　　要：实验以水为反应介质,Pd/C为催化剂,OVN为助催化剂,以NaHSO3水溶液为处理剂,考察了Pd/C催化剂经预处理后,对催化加氢制备4,4′-二氨基二苯乙烯-2,2′-二磺酸(DSD酸)反应选择性的影响。实验结果表明,催化剂的预处理和助催化剂的添加,均可提高Pd/C催化加氢制备DSD酸反应的选择性。在较佳条件下,首次催化加氢所得产品DSD酸的收率可达95.77%,副产物苄基物的质量分数仅为0.31%。Preparation of 4,4′-diaminostilbene-2,2-disulfonic acid （DSD acid） with liquid-phase catalytic hydrogenation method using pretreatment of palladium-carbon as catalyst and assistant catalyst OVN and NaHSOa water treatment in water medium is studied. It was shown that： pretreatment of palladium-carbon and assisting-catalysts could improve the selectivity of the reaction. The optimum conditions of the first catalytic hydrogenation determined, purity of the DSD acid can reached to 95.77%, and the by-product just come up to 0.31%.

关 键 词：4 4′-二氨基二苯乙烯-2 2′-二磺酸催化加氢钯碳催化剂 

分 类 号：TQ426.94[化学工程]