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Recent Progress in Solid Superacid ABSTRACT The recent literature on solid superacid catalysts is reviewed. Until now, three types of solid superacid have been developed: (i) a mounted acid which was obtained by the fixation of a liquid acid such as SbF, on supports of high surface area, (ii) a combined acid which was obtained by the combination of metal halides with metal salts, and (iii) sulfate-promoted metal oxides. Specific actions and structures of these catalysts have been characterized and evaluated. Future prospects for the application of solid superacids to several reactions are also briefly presented. ²»ºÃÒâ˼£¬´«²»ÉÏÀ´£¬Â§×¡À´ÕâÀïÏÂÔØ°É£¬µÇ½ÃÜÂë123456 http://free5.ys168.com/?yanyj04 [ Last edited by yanyj04 on 2007-1-22 at 20:32 ] |

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