私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關(guān)鏈接
聯(lián)系方式
  • 通信地址:江蘇省南京市江寧區(qū)東南大學(xué)路2號(hào):化學(xué)化工學(xué)院化工老樓514室
  • 郵編:211189
  • 電話:18936881048
  • 傳真:
  • Email:fchem@163.com
當(dāng)前位置:> 首頁(yè) > 論文著作 > 正文
Effect of Morphological Structure of PtSnNa/ZSM-5 on Its Catalytic Performance in Propane Dehydrogenation
作者:Wang, YJ (Wang Yongjuan) [1] ; Zhou, YM (Zhou Yuming) [1] ; Zhou, SJ (Zhou Shijian) [1] ; He, Q (He
關(guān)鍵字:ZSM-5 zeoliteacid sitespropane dehydrogenationcoke
論文來源:期刊
發(fā)表時(shí)間:2020年
The ZSM-5 zeolite with flower-shaped crystallites (marked as ZFS) was synthesized through the hydrothermal preparation method. The properties of ZFS as a supporting material have been investigated in comparison with the traditional ZSM-5 zeolite. The prepared samples were characterized by XRD, N-2 adsorption-desorption, TEM, NH3-TPD, XRF, and XPS techniques. The results showed that the formation of the flower-shaped crystallites directly influenced the physicochemical properties of ZFS material. In ZFS, the pore structure was changed, the acid content was decreased, and the surface properties were promoted. Besides, in the PtSnNa/ZFS catalyst, the amount of oxidized Sn species was remarkably increased and the dispersion of Pt was relatively improved. Meanwhile, due to these modifications, the capacity of the catalyst supported on ZFS to accommodate coke was greatly improved and the coke deposits on PtSnNa/ZFS were migrated from active metals to the support. Furthermore, as expected, the catalytic performance of the PtSnNa/ZFS catalyst for propane dehydrogenation to propylene and the stability of catalyst were significantly improved.
主站蜘蛛池模板: 高台县| 新昌县| 巨野县| 柘城县| 抚州市| 丘北县| 永昌县| 本溪市| 盐池县| 广丰县| 墨玉县| 乌兰察布市| 土默特右旗| 体育| 包头市| 桑植县| 牙克石市| 余姚市| 始兴县| 两当县| 宁城县| 彭阳县| 武穴市| 襄樊市| 民县| 遂川县| 穆棱市| 五大连池市| 抚州市| 时尚| 绥江县| 香港| 清原| 师宗县| 新密市| 岳西县| 三江| 淅川县| 墨玉县| 西乌珠穆沁旗| 即墨市|