when copper nitrate and cobalt nitrate are impregnated together, copper nitrate and cobalt nitrate ratio is 0.8, and Al_2O_3 (bond) amounts reach 23%, Co and Cu-containing ZSM-5 shows both the greatest capability and intensity.

• 当铜钴离子共同浸渍、铜钴离子浸渍量比(n(Cu) n(Co))为0 8和Al2O3(粘合剂)用量w(Al2O3)为23%25时,改性的ZSM-5分子筛既具有良好的吸附性能又有良好的机械强度。