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Äǿ϶¨²»Ò»ÑùµÄ MCM-56ºÍMCM-2½á¹¹Ïà½ü£¬Ö»ÊDzã×´¼ä¾à¸ü½ô´Õµã ÀàËÆÊ¯Ä«½á¹¹ ¶øZSM-5ÊÇMFI½á¹¹£¬¾ÍÏñÈý¸ù¿ÕÐĹ÷¹÷°ÚÁ˸öÀàËÆÈýÎ»×ø±êÖáÀàÐÎʽ ²»¹ý²»ÍêÈ«³ÉÖ±½Ç |
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daiqiguang
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In recent years, many modifications in the synthesis procedure and catalytic applications of MCM-22 have been published [1¨C4], while little is reported about the properties of MCM-56, especially the catalytic applications. Fung [4] first reported the synthesis of MCM-56. As MCM-56 and MCM-22 all share the MWW structure[5], MCM-56 exhibited some similarities with MCM-22, including the sinusoidal network channel and a large number of 12 MR cups exposed to the crystal exterior [6]. MCM-56 can be thermally treated without affecting its layered structure, while the structure of as-made MCM-22 changed markedly after calcinations. Large supercages with an inner diameter of approximately 0.71 nm and a height of 1.82 nm appear in calcined MCM-22 [7]. [ Last edited by daiqiguang on 2007-3-22 at 09:56 ] |

3Â¥2007-03-22 09:54:04
xmclyn
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4Â¥2007-03-22 09:55:01
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Preparation, characterization of MCM-56 and catalytic activity in one-step synthesis of MIBK from acetone • SHORT COMMUNICATION Catalysis Communications, Volume 6, Issue 2, February 2005, Pages 107-111 Piao Ping Yang, Jian Feng Yu, Zhen L¨¹ Wang, Mei Ping Xu, Qing Sheng Liu, Xu Wei Yang and Tong Hao Wu£» Characterization and catalytic properties of MCM-56 and MCM-22 zeolites • ARTICLE Microporous and Mesoporous Materials, Volume 40, Issues 1-3, November 2000, Pages 9-23 Gopalakrishnan G. Juttu and Raul F. Lobo£» Characterization and Catalytic Activity of MCM-22 and MCM-56 Compared with ITQ-2 • ARTICLE Journal of Catalysis, Volume 191, Issue 1, 1 April 2000, Pages 218-224 A. Corma, U. Diaz, V. Forn¨¦s, J. M. Guil, J. Mart¨ªnez-Triguero and E. J. Creyghton£» ×Ô¼º¿´¿´ÕâЩÎÄÏ×Ó¦¸Ã¿ÉÒÔ½â¾ö |
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6Â¥2007-03-22 09:56:48
ycf2005
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