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本文进一步报导了高岭土转化法制高硅Y型沸石的研究结果。 在工艺方面,大大提高了单位反应体积的投料量(基数~(**))和Y型沸石的产量,初步解决了母液重复使用问题。 该沸石用氯化稀土交换并制成催化剂具有较高的催化裂化活性。 实验表明反应物组成Na_2O/SiO_2对晶化过程的影响与硅酸根离子聚合度有关。基数的提高使相组成图易晶化区域的边界线向低Na_2O/SiO_2和低SiO_2/Al_2O_3方向移动。 本文探索了高岭土转化过程的机理,初步认为大部分Y型沸石由偏高岭土直接转化而来,同时也存在溶解转化过程,但以前者为主。
This article further reports the results of kaolin conversion of high-silica Y-type zeolite. In the aspect of technology, the feed volume per unit reaction volume (base number (**)) and the yield of Y zeolite are greatly increased, and the problem of reuse of the mother liquor is initially solved. The zeolite with rare earth chloride exchange and made of the catalyst has a high catalytic cracking activity. Experiments show that the reactant composition of Na 2 O / SiO 2 crystallization process and silicate ion polymerization degree. The increase of base radii makes the boundaries of the facies-prone regions of the phase composition move towards low Na 2 O 2 / SiO 2 and low SiO 2 / Al 2 O 3. In this paper, the mechanism of kaolin conversion was explored. It was initially believed that most of the Y-type zeolites were directly transformed from metakaolin and dissolved and transformed, but the former was the main one.