煤层气双重整制合成气新型载Ni-MCx催化剂活性组分协同作用和载体效应研究

项目名称： 煤层气双重整制合成气新型载Ni-MCx催化剂活性组分协同作用和载体效应研究

项目编号： No.U1261104

项目类型： 联合基金项目

立项/批准年度： 2013

项目学科： 冶金与矿业学科

项目作者： 赵忠奎

作者单位： 大连理工大学

项目金额： 60万元

中文摘要： 煤层气是储量十分丰富的煤炭伴生资源，也是重要温室气体。拟以煤层气主要成分甲烷为模型分子，研究其CO2-H2O双重整以制取合成气，具有资源和环境双重意义。鉴于贵金属储量低、价格高的缺陷，非贵金属颇具前景。后者主要集中于Ni，展示出了与贵金属可比的催化活性和选择性，但其抗积碳、抗烧结稳定性亟待提高。申请者发现，Mo2C的引入能够改善Ni/ZrO2的稳定性。本项目拟研究新颖纳米结构氧化锆（纳米带、纳米网等）载Ni-MCx（M为Mo或W）催化甲烷CO2-H2O双重整，通过M种类、M/Ni比、载量和碳化参数的调变和掺杂改性的新颖纳米结构氧化锆的构筑，以提升Ni基催化剂的催化稳定性。通过对甲烷CO2-H2O双重整反应数据的分析并结合新鲜和失活催化剂的表征，揭示所构筑的新颖载Ni-MCx催化剂活性组分协同作用的规律和载体效应。本项目旨在为我国煤层气这一丰富煤炭伴生资源的高效、清洁资源化利用提供科学依据。

中文关键词： 甲烷重整；合成气；镍基催化剂；载体效应；协同作用

英文摘要： Coal seam gas is one kind of abundant resource associated with coal, and it’s simultaneously considered as an important greenhouse gas. Methane, as the principal component of coal seam gas, will be used as a model molecule, this proposal focused on the combined CO2-H2O reforming of methane (CRM) to produce synthesis gas is great dual significance for both resource and environment protection. Due to the poor-availability and high cost of precious metals, to replace precious metals with non-precious ones is a promising approach. Nickel-based catalysts have been excessively employed for CRM reforming of methane, and they have exhibited high catalytic activity and selectivity, but the coke- and metal sintering-resistance stability remains to be further improved. Our previous studies demonstrate that the introduction of Mo2C into the supported Ni catalyst on zirconia improved the catalytic stability for CRM reaction. The proposed work is, based on the previous work, to study the fabrication of the novel supported Ni-MCx (M is Mo or W) catalysts on nano-structured zirconia carriers (nanobelt and nanowire, etc) and the catalytic performance in CRM reaction. The purpose is to improve the catalytic stability of existing Ni based catalysts in CRM reaction through the tuning of the M type, M/Ni ratio, Ni-MCx loading and re

英文关键词： reforming of methane；synthesis gas；nickel-based catalyst；support effect；synergism