CO2-Sequestration by Humic Substances and the Contribution of Quinones and Quinone Imines:Consideration on the Molecular Scale

摘要：

　　Recent results support the assumption that hydroquinones (e.g.methoxyhydroquinone,MHQ),benzoquinones (e.g.,methoxy-1,4benzoquinone,MBQ; 2,5-dihydroxy-1,4benzoquinone,DHBQ) and quinone imines (e.g.2,5-dihydroxy-1,4benzoquinone imine,DHBQI) are pivotal compounds in the oxidative degradation of ligneous materials,and in the formation of nitrogeneous oligo-and polymeric materials.Furthermore,DHBQ is able to bind CO2 under neutral aqueous conditions,forming quinone carboxylic acids and subsequently stable products.In addition,DHBQIs have a considerable CO2 binding potential as (1) the transition state of the electrophilic addition of CO2 to the respective dianion which has a similarly low activation energy as in the case of DHBQ,and (2) the tautomeric 2,5-diamino-1,4benzoquinone,DABQ) has the tendency to form ion pair complexes.

关键词： CO2 sequestration Carbamate Ion-pair complex 1,4-dihydroxy-1,4benzoquinone

作者: F.Liebner M.Wieland T.Hosoya G.Pour A.Potthast T.Rosenau

作者单位: University of Natural Resources and Life Sciences,Vienna,Department of Chemistry,Muthgasse 18,A-1190 Vienna,Austria

会议类型: 国际会议

会议名称: the 16th Meeting of the International Humic Substances Society (第十六届国际腐殖物质学会大会(IHSS 16))

会议地点: 杭州

会议语种:英文

页码: 206-209

在线出版日期: 2012-09-09（万方平台首次上网日期，不代表论文的发表时间）