Number | Name | Date | Kind |
---|---|---|---|
3617511 | Jenkins et al. | Nov 1971 | |
4783575 | Schmidt et al. | Nov 1988 | |
4918041 | Hollstein et al. | Apr 1990 | |
5113034 | Soled et al. | May 1992 |
Number | Date | Country |
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1288339 | Nov 1989 | JPX |
Entry |
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Hino, M. et al., "Synthesis of Solid Superacid of Tungsten Oxide Supported Zirconia and its Catalytic Action for Reactions of Butane and Pentane," J. Chem. Soc., Chem. Commun., 1259-1260 (1988). |
Proceedings 9th Intern. Congress on Catalysis, vol. 4, Oxide Catalysts and Catalyst Development, M. J. Phillips et al, ed., 1727-1734 (1988). |