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yang820629

金虫 (小有名气)

[交流] 【求助】SAPO-34催化剂的制备 已有4人参与

请问各位大师:
        SAPO-34分子筛催化剂在上反应前需要进行水热处理吗?
        如果需要,水热处理条件是会么?
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具茨学人

木虫 (职业作家)

yang820629(金币+1): 2010-06-06 16:10:39
水热处理?   SAPO-34一般都是水热法合成的  高压釜合成 洗涤 干燥   焙烧活化后就可以直接使用了吧
2楼2010-06-03 10:15:39
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aust_jhe

至尊木虫 (著名写手)

★ ★
催化大师(金币+2):谢谢指点,欢迎常来催化版讨论! 2010-06-03 16:35:31
yang820629(金币+1): 2010-06-06 16:11:27
14.16 g of pseudoboehmite (catapal A, 74.2% Al2O3, Vista chemicals) was added to 25 mL of water, and then mixture of 23.06 g of phosphoric acid (85%, Samchun chemicals) and 1.8 mL of water was added to the alumina solution under stirring by a drop-wise addition for 2 h and then the resulting solution was stirred for 2 h at room temperature. Clear silica solution was further added, which was prepared by dissolution of 9.01 g of colloidal silica (Ludox As-40, 40% SiO2) into 42.09 g of 35% TEAOH aqueous solution (Aldrich) at 100 °C for 12 h by stirring. Finally, 8.71 g of morpholine (Aldrich) and 12 mL of water was added and the resulting mixture was stirred for 25 h. The resulting gel mass was transferred into autoclave and heated in two steps of 120 and 200 °C and maintained for 12 h at each temperature with vigorous stirring. The solid product was recovered by centrifugation, washed several times with distilled water and dried overnight at 120 °C. As-synthesized product was then calcined in air at 550 °C.
天天学习,好好向上
3楼2010-06-03 11:56:53
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端暮紫

金虫 (正式写手)


催化大师(金币+1):谢谢指点,欢迎常来催化版讨论! 2010-06-03 16:35:44
yang820629(金币+1): 2010-06-06 16:11:41
水热合成
当做催化剂的时候要经过交换和焙烧的,至少要烧掉模板剂吧
4楼2010-06-03 12:12:16
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andyxia

铜虫 (初入文坛)

yang820629(金币+1): 2010-07-04 08:32:16
水热处理?你应该指的是钝化吧。他不需要拓空,所以不要处理。如果你是指交换那是必须的。
5楼2010-06-30 17:28:01
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wangyj530

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小木虫: 金币+0.5, 给个红包,谢谢回帖
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6楼2016-05-24 08:53:20
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