1. Breck D, Skeels GW. US Patent, 4503023, 1985-03-05
2. Tang Y, Xu JS, Gao Z. Isomorphous substitution of metallic elements for zeolite Y in aqueous solution (in Chinese). Chem J Chinese Universities, 1990, 11: 1317–1321
3. Xu ZL, Zhang YZ, Zheng LB. The secondary synthesis of zeolites via framework substitution for aluminum I preparation and characterization of zeolite Y containing Ga (in Chinese). J Mol Catal (China), 1992, 6: 271–278
4. Dwyer J, Karim K. The incorporation of heteroatoms into faujastic framework by secondary synthesis using aqueous fluoride complexes. J Chem Soc Chem Commun, 1991, 14: 905–906
5. Mikhail S, Zaki T, Khalil L. Desulfurization by an economically adsorption technique. Appl Catal A: Gen, 2002, 227: 265–278