铁铬系中温变换催化剂的穆斯堡尔研究

• 机 构: 南京大学物理系穆斯堡尔谱学科研组,南京大学化学系化肥催化剂科研组,
• 出 处: 南京大学学报(自然科学版)
• 发表日期: 1978年01期
• 关键词: 中温变换催化剂 穆斯堡尔 条件基 反尖晶石结构 制备流程 性质测定 比表面 硫酸亚铁溶液 穆斯堡尔谱学 变换反应

穆斯堡尔参数、x射线衍射、表面性质测定等表明所研究的铁-铬系中变催化剂的结构、性能以及制备条件间存在相互联系。当所用制备流程和条件基本相同时,活性和催化剂原样的比表面、平均粒子半径、和活性测定后催化剂中Fe_3O_4反尖晶石结构的倒置度、Fe_3O_4易氧化程度彼此有关,上述性质又因所用碳铵溶液和硫酸亚铁溶液反应时的pH值而不同。

Mossbauer parameters, x-ray diffraction, surface properties, etc. indicate that there is a relationship between the structure, properties and preparation conditions of the iron-chromium based catalyst. Activity and catalyst-like specific surface area, average particle radius, and activity were measured after the catalyst was assayed for the degree of inversion of the Fe 3 O 4 spinel structure and the degree of susceptibility to Fe 3 O 4 oxidation, all of which were due to the use of Ammonium bicarbonate solution and ferrous sulfate solution reaction pH value and different.