简介:新型C207催化剂,采用目前最先进的生产工艺流程——“硝酸法”进行生产,并采用并流沉淀法,使Cu2和Zn2在较为恒定的pH值下同时沉淀,形成相互均匀分散的共沉淀物,使铜、锌离子的分布更均匀,氧化铜晶粒度小,催化剂表面积高,比孔容大,这样使催化剂的活性和热稳定性更好。新型C207催化剂原料采用上海冶练厂和上海锌厂生产的优质1#拌电解铜、1#锌锭,以及高级活性氢氧化铝(r-Al2O3),生产用水采用阳床-阴床-混床处理的高级脱盐水,催化剂生产流水线均产用不锈钢设备,彻底杜绝了铁离子的生产,使其催化剂副反应更小,结蜡现象更少,反应后期不会影响合成正常生产。
简介:TheeffectofTi(C,N)onpropertiesoflow-carbonMgO-Cbrickswasinvestigated.Thephasecompositionandthemicrostructureofthematrixoflow-carbonMgO-CbrickcontainingTi(C,N)werestudiedbyXRDandSEManalysistogetherwithEDS.TheresultsshowedthatTi(C,N)distributedinthematrixoflow-carbonMgO-Cbrickuniformlyafterbeingtreatedat1600℃for3hincokepowderbed,andTi(C,N)andMgOformedasolidsolution.Afterthetreatmentat1600℃for3hincokepowderbed,thebulkdensityandcoldcrushingstrengthoflow-carbonMgO-CbrickwithTi(C,N)decreased,andtheapparentporosityandlinearchangerateofspecimensincreased.Theoxidationresistanceoflow-carbonMgO-CbrickwithTi(C,N)wassuperiortothatoflow-carbonMgO-Cbrickwithnoadditives,butinferiortothatoflow-carbonMgO-CbrickwithAlpowder.TheslagresistanceofthespecimenwithTi(C,N)wasexcellentaswell.