摘要
利用沉淀-浸渍法制备不同配比的铁锆复合固体酸催化剂,并应用于老万煤制腐植酸中。利用元素分析、官能团分析和红外光谱分析研究产物硝基腐植酸(NHA)的结构和性质,考察了硝酸氧解过程中固体酸催化剂不同金属配比、用量对硝基腐植酸的产率、元素组成和官能团的影响。结果表明,固体酸催化剂能提高煤氧解NHA的产率,产物C,H含量降低,N(H):N(C)降低,N含量增加,E4/E6增加;当催化剂中n(Fe):n(Zr)=2:1,催化剂加入量为1.06%时,所得腐植酸产率可达54.94%。
Different ratio of Fe-Zr composite solid acid catalyst were produced using precipitation -impregnation, and applied to oxidize degrade Laowan coal to produce humic acid. The structures and properties of nitric humic acid （NHA） were investigated by element analysis, functional group analysis and Fourier transform Infrared spectra （FTIR）. Effects of different ratio of solid acid catalyst, were investigated on NHA yield, elemental composition and functional group, respectively.The results show that the solid acid catalyst can significantly increase the NHA yield by coal oxide-degradation. The contents of carbon, hydrogen and H/C atom ratio of NHA produced decrease while nitrogen contents and optical density E4/E6 value increase. Under the condition of n（Fe）： n（Zr）=2：1 with 20% nitric acid and catalyst dosage at 1.06%, maximum NHA yield（Laowang） was 54.94%.
出处
《安徽工业大学学报（自然科学版）》
CAS
2009年第4期390-393,共4页
Journal of Anhui University of Technology（Natural Science）
基金
安徽省教育厅自然科学基金重点项目(2004KJ054-ZD)
关键词
固体酸
催化剂
煤
氧解
腐植酸
solidacid
catalyst
coal
oxidize degrate
huimc acid
