The resin from Shulan brown coal is separated by column chromatography repeatedly, then the eluant is ana-lyzed by gas chromatography-mass spectrometery. The result indicates that the distribution of main compounds am...The resin from Shulan brown coal is separated by column chromatography repeatedly, then the eluant is ana-lyzed by gas chromatography-mass spectrometery. The result indicates that the distribution of main compounds among the four fractions is different. D:A-Friedolean-7-ene, Simoneillite, C 25 A,B,C,D Ring-tetraaromatic-ursane and Retene are the main compounds in the four different fractions, respectively. The formation of some compounds and utilization of the resin were discussed.展开更多
采用四苯硼钠电位滴定法测定阳离子褐煤树脂的阳离子度。通过消除测定方法的离子干扰、优化四苯硼钠电位滴定法的测定条件来提高测定方法的准确度。采用5%盐酸溶液提取阳离子腐植酸,去除钾离子和其他水溶性杂质;四苯硼钠电位滴定过程中...采用四苯硼钠电位滴定法测定阳离子褐煤树脂的阳离子度。通过消除测定方法的离子干扰、优化四苯硼钠电位滴定法的测定条件来提高测定方法的准确度。采用5%盐酸溶液提取阳离子腐植酸,去除钾离子和其他水溶性杂质;四苯硼钠电位滴定过程中,提纯后阳离子腐植酸加入量为0.5 g,用0.2%氢氧化钠溶液溶解阳离子腐植酸,在p H 10.0条件下,选用甘汞电极为参比电极,氟硼酸根离子选择性电极为指示电极,用十六烷基三甲基溴化铵标准溶液电位滴定四苯硼钠,电位突变约200~300 m V,加标回收率达95%,满足分析测试的要求。实验结果表明,该方法选择性好、准确性高、易于操作,具有较高的推广应用价值。展开更多
In order to research how lignite is utilized, two coal samples of seams 2 and 4 were taken from the Huangxian Basin, China. The samples were separated into vitrinite, sporinite, and resinite. Geo-chemical and pyrolysi...In order to research how lignite is utilized, two coal samples of seams 2 and 4 were taken from the Huangxian Basin, China. The samples were separated into vitrinite, sporinite, and resinite. Geo-chemical and pyrolysis methods were used to analyse three maceral groups and two seam samples. The results indicate that the resinite and sporinite groups have higher extract yields, S1, S2, HI values, and pyrolysis compounds. These differences may shed light on the usage of the Huangxian lignite. Seam 2 pro- duces more gas and oil than seam 4 does because seam 2 contains more resinite and sporinite macerals.展开更多
文摘The resin from Shulan brown coal is separated by column chromatography repeatedly, then the eluant is ana-lyzed by gas chromatography-mass spectrometery. The result indicates that the distribution of main compounds among the four fractions is different. D:A-Friedolean-7-ene, Simoneillite, C 25 A,B,C,D Ring-tetraaromatic-ursane and Retene are the main compounds in the four different fractions, respectively. The formation of some compounds and utilization of the resin were discussed.
文摘采用四苯硼钠电位滴定法测定阳离子褐煤树脂的阳离子度。通过消除测定方法的离子干扰、优化四苯硼钠电位滴定法的测定条件来提高测定方法的准确度。采用5%盐酸溶液提取阳离子腐植酸,去除钾离子和其他水溶性杂质;四苯硼钠电位滴定过程中,提纯后阳离子腐植酸加入量为0.5 g,用0.2%氢氧化钠溶液溶解阳离子腐植酸,在p H 10.0条件下,选用甘汞电极为参比电极,氟硼酸根离子选择性电极为指示电极,用十六烷基三甲基溴化铵标准溶液电位滴定四苯硼钠,电位突变约200~300 m V,加标回收率达95%,满足分析测试的要求。实验结果表明,该方法选择性好、准确性高、易于操作,具有较高的推广应用价值。
基金Supported by Deutscher Akademischer Austauschdienst (DAAD)
文摘In order to research how lignite is utilized, two coal samples of seams 2 and 4 were taken from the Huangxian Basin, China. The samples were separated into vitrinite, sporinite, and resinite. Geo-chemical and pyrolysis methods were used to analyse three maceral groups and two seam samples. The results indicate that the resinite and sporinite groups have higher extract yields, S1, S2, HI values, and pyrolysis compounds. These differences may shed light on the usage of the Huangxian lignite. Seam 2 pro- duces more gas and oil than seam 4 does because seam 2 contains more resinite and sporinite macerals.
