A mixture of L-cysteine,L-tartaric acid and acetone was heated in the presence of salicylaldehyde in the acetic acid to prepare D-2,2-dimethyl-4-thiazolidinecarboxylic acid,L-tartarate with the yield of 65.

A chiral resolving reagent isobutyl L-tartrate was prepared from L-tartaric acid and isobutyl alcohol using p-toluene sulphonic acid and toluene as a catalyst and a water-carrying agent,respectively.

Chiral ligands,(4R,5R)-2,2-dimethyl-5-[(4-pyridineamino)carbonyl]-1,3-dioxolane-4-formate and(4R,5R)-2,2-dimethyl-N,N′-di(pyridine-4-yl)-1,3-dioxolane-4,5-bisformamide,were synthesized from L-tartaric acid.

Application of rare earth-modified zeolite L in hydrocarbons cracking catalyst;

Action of crystal seeds in the synthetic system of zeolite L;

Zeolite L is synthesized from kaolin by in-situ hydrothermal method,with appropriate amount of other constituents,such as sodium silicate,water,zeolite L initiator and potassium hydroxide.

The crystallization field of L zeolite and its changes with the synthesis conditions are studied.

Three kinds of iron-based catalysts are prepared by impregnation,they are iron loaded powdered silicon dioxide catalyst,iron loaded L zeolite catalyst and iron loaded silica gel catalyst.

Four kinds of iron-based catalysts were prepared,they are iron clay catalyst,iron loaded powdered silicon dioxide catalyst,iron loaded L zeolite catalyst and iron loaded silica gel catalyst.