Fundamental Studies of the Oxidation of Oxidation of Sulfur Dioxide to Sulfur Trioxide over Supported Metal-Oxide Catalysts

负载型金属氧化物催化剂上二氧化硫氧化成三氧化硫的基础研究

• 批准号: 9626893
• 负责人: Israel Wachs
• 金额: $ 31.5万
• 依托单位: Lehigh University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-15 至 1999-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9626893&HistoricalAwards=false
• 关键词: Fundamental; Studies; Oxidation; Sulfur; Dioxide

ABSTRACT CTS-9626893 This is a study of molecular structure-activity relationships in the oxidation of sulfur dioxide to sulfur trioxide over supported solid metal-oxide catalysts. (The sulfuric acid contact process, which uses a supported molten salt as the catalyst, is not the subject of this study.) Fundamental issues addressed include the kinetics, the reaction mechanism, the nature of the active site including size and structure, and the effects of the support, surface additives and various gases such as water, nitric oxide, hydrocarbons, and ammonia. Model supported catalysts containing reducible oxides of vanadium, molybdenum, chromium, rhenium, or manganese are synthesized, characterized by Raman, infrared, and nuclear magnetic resonance spectroscopies, and tested for catalytic activity for the subject reaction. This information is used to establish structure-activity relationships for oxidation of sulfur dioxide. The solid-oxide catalyzed oxidation of sulfur dioxide is important in the industrial production of sulfuric acid as well as in several environmental technologies including the DESONOX and SNOX processes for removing nitrogen and sulfur from industrial (including electric power generator) plants and selective catalytic reduction to remove nitrogen oxides, for in which sulfur trioxide is a poison.

摘要CTS-9626893 本文研究了负载型固体金属氧化物催化剂上二氧化硫氧化为三氧化硫的分子结构与活性关系。 (The硫酸接触法，其使用负载的熔融盐作为催化剂，不是本研究的主题。 解决的基本问题包括动力学，反应机理，活性位点的性质，包括大小和结构，以及支持，表面添加剂和各种气体，如水，一氧化氮，烃，和氨的影响。 合成含有钒、钼、铬、钒或锰的可还原氧化物的模型负载型催化剂，通过拉曼、红外和核磁共振光谱表征，并测试对主题反应的催化活性。 这些信息用于建立二氧化硫氧化的结构-活性关系。 二氧化硫的固体氧化物催化氧化在硫酸的工业生产中以及在几种环境技术中是重要的，所述环境技术包括用于从工业（包括发电机）设备中除去氮和硫的DESONOX和SNOX方法以及用于除去氮氧化物的选择性催化还原，其中三氧化硫是毒物。