镍系催化体系；
Taking nickel catalyst system as an example, the effects of dissolved oxygen on butadiene polymerization and the result of using the pressure-self-raising-unit were analyzed.
以镍系催化剂为例，考察了溶解氧对丁二烯聚合系统的影响，并考察了使用升压器后的作用效果。
Hydrogenolysis of methyl formate to methanol was the rate-determining process and was mainly catalyzed by nickel-based or copper-based catalyst system.
甲酸甲酯氢解制甲醇这一步骤的难点在于环境友好的低温高活性铜基催化剂的研制。
应用推荐