• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of natural gas science and engineering >Effects of static and stirring aging on physiochemical properties of SAPO-18 and its performance in MTO process
【24h】

Effects of static and stirring aging on physiochemical properties of SAPO-18 and its performance in MTO process

机译：静态和搅拌老化对SAPO-18理化性质及其在MTO过程中性能的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper was aimed to assess the effects of static and stirred aging on crystal size, morphology, Si incorporation rate, and acidity of SAPO-18 and discusses its performance in methanol-to-olefin (MTO) process. SAPO-18 prepared by static aging had cubic particles with the wide range of 0.05-4 microns but the catalyst synthesized by stirred aging method had uniform crystalline particles with the elongated cubic shape morphology and a narrow distribution size of 100-600 nm. According to the results of FTIR and XRF analysis, the aging procedure can also influence the Si incorporation rate. Agitation during the aging time decreased the Si content in the final catalyst and moderated the acid strength. The catalytic test showed that SAPO-18 sample prepared by stirred aging method was about five times more stable in MTO reaction and had light olefins selectivity of around 87% and methanol conversion of 99%. (C) 2014 Elsevier B.V. All rights reserved.
机译：本文旨在评估静态和搅拌时效对SAPO-18晶体尺寸，形态，Si掺入率和酸度的影响，并讨论其在甲醇制烯烃（MTO）工艺中的性能。通过静态时效制备的SAPO-18具有范围在0.05-4微米的宽范围的立方颗粒，但是通过搅拌时效方法合成的催化剂具有均匀的晶体颗粒，其具有细长的立方体形形态并且窄的分布尺寸为100-600nm。根据FTIR和XRF分析的结果，时效过程也会影响Si的掺入率。老化期间的搅拌降低了最终催化剂中的Si含量并降低了酸强度。催化试验表明，通过搅拌老化法制备的SAPO-18样品在MTO反应中的稳定性高约5倍，轻烯烃的选择性约为87％，甲醇转化率为99％。 （C）2014 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号