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ankang276

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Catalysts with 20 wt.% Mo2C supported on HY zeolite and doped
with 0.5¨C2 wt.% Mg or 1 wt.% K, were prepared by co-impregnation of
the zeolite (ZeolystTM CBV720, SiO2/Al2O3=30) using a quantified
aqueous solution of ammonium heptamolybdate tetrahydrate (MoO3
81.0¨C83.0%, Sigma) mixed with magnesium nitrate hexahydrate (99%,Sigma) or potassium nitrate (99.97%, BDH Chemicals). After aging at
70 ¡ãC for 2 h, the impregnated support was dried at 120 ¡ãC for 12 h
and calcined at 500 ¡ãC for 4 h.

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liubencai

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sltmac(½ð±Ò+1): ¸ÐлӦÖú£¬»¶Ó­³£À´~ 2011-08-07 10:04:31
¸ºÔØÓÚHY·Ö×Óɸ²¢ÓÃ0.5-2£¥£¨ÖÊÁ¿£©Mg»ò1£¥£¨ÖÊÁ¿£©K²ôÔÓµÄ20£¥£¨ÖÊÁ¿£©Mo2C´ß»¯¼ÁµÄÖÆ±¸£¬ÊÇͨ¹ýÓÃËÄË®ÆßîâËáï§(MoO3 81.0¨C83.0%, Sigma)ÓëÁùË®ÏõËáþ£¨99£¥£¬Sigma¹«Ë¾£©»òÏõËá¼Ø(99.97%, BDH Chemicals)µÄ»ìºÏÎïµÄ¶¨Á¿Ë®ÈÜÒºÀ´¹²Í¬½þ×Õ·Ö×Óɸ(Zeolyst TM CBV720, SiO2/Al2O3=30)¡£½þ×ÕºóµÄÔØÌåÔÚ70¡ãCÀÏ»¯2Сʱºó£¬ÔÙÔÚ120¡ãCÀÏ»¯12Сʱ£¬ÔÚ500¡ãC±ºÉÕ4Сʱ
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zou-yanhua

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sltmac(½ð±Ò+1): Â¥ÏÂ˵µÄ¶Ô£¬sigmaÊÇÒ»¸ö¹æÄ£±È½Ï´óµÄÊÔ¼Á¹«Ë¾£¨ÃÀ¹ú£© 2011-08-07 15:27:28
ankang276(½ð±Ò+20, ·­ÒëEPI+1): 2011-08-07 15:45:06
ÓÐ20%£¨ÖÊÁ¿·ÖÊý£©µÄ Mo2C¸ºÔØÓÚHY·Ö×Óɸ²¢²ôÔÓÁË Mg£¨ÖÊÁ¿·ÖÊý0.5-2 %£© »òK£¨1%£©µÄ´ß»¯¼Á£¬ÊÇͨ¹ýÓÃËÄË®ÆßîâËáï§(MoO3 81.0¨C83.0%, Î÷ÃÅ×Ó¹«Ë¾)ÓëÁùË®ÏõËáþ£¨99£¥£¬Î÷ÃÅ×Ó¹«Ë¾£©»òÏõËá¼Ø(99.97%, BDH »¯Ñ§ÖƼÁ)µÄ¶¨Á¿Ë®ÈÜÒº»ìºÏÀ´¹²Í¬½þÅÝ·Ö×Óɸ¶øÖƵõġ£ÔÚ70¡ãCÀÏ»¯2Сʱºó£¬ÔÙ½«½þÅݺóµÄÔØÌåÔÚ120¡ãCϸÉÔï12Сʱ£¬È»ºóÔÚ500 ¡ãCÏÂìÑÉÕ4Сʱ¡£
3Â¥2011-08-07 13:06:04
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zou-yanhua

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