...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Microporous and mesoporous materials: The offical journal of the International Zeolite Association >Fabrication of attrition-resistant nanostructured catalyst by spray dryer for methanol to light olefins reaction in a fluid bed reactor and coke formation
【24h】

Fabrication of attrition-resistant nanostructured catalyst by spray dryer for methanol to light olefins reaction in a fluid bed reactor and coke formation

机译：通过喷雾干燥器用甲醇喷雾干燥器制备耐蒸发型纳米结构催化剂在流化床反应器中的光烯烃反应和焦炭形成

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

The aim of this research is to investigate the performance of three micro-spherical sprayed dried samples with SAPO-34 of different particle sizes. Physiochemical properties of the catalysts were identified by XRD, FESEM, EDX, BET and FTIR techniques. Furthermore, TGA and FTIR techniques were implemented to characterize the coke deposition. Methanol to olefins performance tests were carried out to study the activity of the catalysts in fixed bed reactor. The optimized catalyst was also tested in a fluidized bed reactor. The results of XRD analysis exhibit typical SAPO-34 and kaolinite phase for all the three formulated catalysts. It represents the successful spray drying that crystallite structure of the shaped samples by the spray dryer is composed of both kaolinite and SAPO-34 phase. With the comparison of FESEM results of the samples, the larger and more spherical particles are obtained for the sample spray dried with SAPO-34 of the smallest size. Furthermore, rapid diffusion of the products prohibiting subsequent transformations of them to heavier products occurs for the sample shaped with the SAPO-34 having the smallest particle size. Furthermore, the optimal shaped sample showed excellent activity of near 5 h during methanol to olefins reaction in fluidized bed reactor. S-T-TDT-F catalyst which was selected for more studies in fluidized bed reactor has lower coking rate and longer life time. It can be explained in a way that pore blockage and acid sites coverage were postponed in the mentioned catalyst.
机译：该研究的目的是研究三种微球形喷涂干燥样品的性能与不同颗粒尺寸的SAPO-34。通过XRD，FESEM，EDX，BET和FTIR技术鉴定催化剂的物理化学性质。此外，实施了TGA和FTIR技术以表征焦沉积。进行甲醇对烯烃性能试验进行研究，以研究固定床反应器中催化剂的活性。还在流化床反应器中测试优化的催化剂。 XRD分析结果表现出所有三种配制催化剂的典型SAPO-34和高岭石相。它代表了成功的喷雾干燥，喷雾干燥器的成形​​样品的晶体结构由高岭石和SAPO-34相组成。随着样品的FESEM结果的比较，获得较大和更多的球形颗粒，用于用最小尺寸的SAPO-34干燥样品喷雾。此外，禁止将它们的后续转化为更重的产品的产品的快速扩散发生，该样品具有具有最小粒径的SAPO-34。此外，最佳形状的样品在甲醇期间在流化床反应器中甲醇期间近5小时显示出优异的活性。选择用于流化床反应器中的更多研究的S-T-TDT-F催化剂具有较低的焦化率和较长的寿命。它可以以孔隙阻塞和酸性位点被推迟在所述催化剂中的方式解释。

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