granular catalyst的意思|示意

The preparation and field-test of the 778-type granular rare-earth catalyst for the treatment of auto exhaust gases have been studied.

本文叙述了778型颗粒状汽车尾气净化稀土催化剂的研究和应用。

Dibutyl oxalate was synthesized with oxalic acid and n-butanol as raw materials and p-toluene sulphonic acid supported on granular active carbon as the catalyst.

以草酸和正丁醇为原料，采用颗粒状活性炭固载对甲苯磺酸作催化剂合成草酸二丁酯。