knapsack tank是什么意思

用法例句

In this paper, the foam-supported PBM catalysts were prepared using epoxy resin, phenol aldehyde resin, and polyurethane and applied in the copolymerization of CO_2 and epoxides.

结果显示,聚氨酯泡沫负载的PBM成功地催化了CO2和环氧丙烷、环氧乙烷以及氧化环已烯的共聚反应,尤其是在催化CO2和环氧丙烷的共聚中显示了较好的催化效率(28g/g),而且负载催化剂循环使用三次后仍有催化活性,有利于实现反应工艺的连续化。