• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >Hydro-conversion of 1-methyl naphthalene into (alkyl)benzenes over alumina-coated USY zeolite-supported NiMoS catalysts
【24h】

Hydro-conversion of 1-methyl naphthalene into (alkyl)benzenes over alumina-coated USY zeolite-supported NiMoS catalysts

机译：在氧化铝涂覆的USY沸石负载的NiMoS催化剂上将1-甲基萘加氢转化为（烷基）苯

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

Hydro-conversion reactions were carried out at 360 ℃ under 5 MPa of H_2 pressure to study ring opening reactions of 1 -methyl naphthalene using NiMoS supported on γ-alumina and alumina-coated/mixed USY zeolites. The catalysts were characterized using N_2 BET, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), pyridine FT-IR, and high-resolution transmission electron microscopy (HR-TEM) to study the influence of morphological and acidic properties on hydrogenation (HYD) and hydrocracking (HC) reactions. NMACZ-2 (NiMoS supported on the minimum amount of alumina-coated USY zeolite) showed enhanced reactivity for HC and produced (alkyl)benzenes with the highest yield, of ca. 80%. By-products were tetralin, decalin and cyclo-paraffin species. The tetralin species produced using NMACZ-2 moved into the alumina-coated USY zeolite support before undergoing HYD to produce decalin species, which were rapidly and selectively hydro-cracked into (alkyl)benzenes. A large amount of decalin was produced through the HYD of tetralin without significant cracking, possibly due to the weak acid character of γ-alumina. Bulk phase Mo oxide species on NMAZ (physical mixture of alumina and USY zeolite), as well as deactivation of the catalysts due to coke formation over the naked zeolite surface, inhibited the ring opening of tetralin, decreasing the yield of (alkyl)benzene. Various morphologies, such as the MoS_2 structure and acidic characteristics of the catalysts, were crucial factors affecting the HC reactivity of 1-methyl naphthalene.
机译：在5 MPa的H_2压力下于360℃进行加氢转化反应，以负载在γ-氧化铝上的NiMoS和氧化铝包覆/混合USY沸石研究1-甲基萘的开环反应。使用N_2 BET，X射线衍射（XRD），X射线光电子能谱（XPS），吡啶FT-IR和高分辨率透射电子显微镜（HR-TEM）对催化剂进行了表征，以研究形态学和酸性的影响氢化（HYD）和加氢裂化（HC）反应的性质。 NMACZ-2（在最小量的氧化铝涂层USY沸石上负载NiMoS）对HC的反应性增强，生成的（烷基）苯的收率最高。 80％。副产物是四氢萘，十氢化萘和环烷烃。使用NMACZ-2生产的四氢萘物种在经历HYD之前，先进入氧化铝涂层的USY沸石载体中，生成萘烷物种，然后将萘烷物种快速选择性地加氢裂化为（烷基）苯。通过四氢萘的HYD生成了大量十氢化萘，而没有明显的开裂，这可能是由于γ-氧化铝的弱酸性所致。 NMAZ（氧化铝和USY沸石的物理混合物）上的块状Mo氧化物物种，以及由于在裸露的沸石表面形成焦炭而使催化剂失活，抑制了四氢化萘的开环，降低了（烷基）苯的收率。催化剂的MoS_2结构和酸性特征等各种形态是影响1-甲基萘HC反应性的关键因素。

著录项

  • 来源
    《Fuel》 |2011年第1期|p.182-189|共8页
  • 作者

    Joo-Il Park; Jihn-Koo Lee; Jin Miyawaki; Young-Kwang Kim; Seong-Ho Yoon; Isao Mochida;

  • 作者单位

    Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 816-8580, Japan;

    I121 Bio-venture Center, Korea Research Institute of Bioscience and Biotechnology, 52 Eoun-dong, Yuseong-gu, Daejeon 305-806, Republic of Korea;

    Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 816-8580, Japan;

    Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 816-8580, Japan;

    Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 816-8580, Japan;

    Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 816-8580, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    LCO; (alkyl)benzenes; alumina-coated zeolite; 1-methyl naphthalene;

    机译：LCO;（烷基）苯;氧化铝涂层沸石1-甲基萘;

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