Sequential Reaction Chromatography For the Product Analysis of Methanol Dehydration

A novel method for analyzing the product of catalyzed methanol dehydration, in sequential connected GDX 101 column A, CaH₂ translation reactor, TCD, GDX 101 column B, hydrogenation column, FID, was developed. H₂O, CH₃OH and C₂H₅OH, after being separated by the chromatographic column A, are changed into H₂ orderly in CaH₂ translation reactor, and then are detected by TCD, to not have to chemical analysis of the condensative components. The rest, CO, CH₄, CO₂, C₂H₄ and CH₃OCH₃, are being separated by the chromatographic column B, and CO and CO₂ are translated into CH₄ respectively, are finally detected with FID. The quantitative results show that the method is satisfactory with good preciseness and repeatability.