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Information Journal Paper

Title

THE EFFECTS OF COMBINED CATALYSIS OF OXALIC ACID AND SEAWATER ON THE KINETICS OF XYLOSE AND ARABINOSE DEHYDRATION TO FURFURAL

Pages

  21-30

Abstract

 It is known that both acids and salts have a positive catalytic effect on the dehydration of pentoses to form FURFURAL, a potentially attractive platform chemical. In this study the effects of the combined usage of an organic acid, instead of stronger mineral acids, and a saline catalyst is investigated. In order to assess these effects, the kinetics of PENTOSE DEHYDRATION to FURFURAL are studied using OXALIC ACID as the primary catalyst and NaCl or SEAWATER as the secondary saline catalyst. The interactions between these two types of catalysts are complex and are, therefore, also assessed thermodynamically. The addition of salts lowers the activity coefficient of the hydronium ions, but simultaneously favours the dissociation of the organic acid. It turned out that these two effects are of similar magnitude, resulting in a fairly constant hydronium ion activity. Because nonetheless higher FURFURAL yields are obtained using the salts as a secondary catalyst, it is concluded that the salts influence the PENTOSE DEHYDRATION mechanism directly. The final FURFURAL yields obtained using OXALIC ACID as the primary catalyst were only slightly lower than those for similar experiments using HCl. The most distinctive difference between the two acids is the lower reaction rate (and thus longer reaction times) when using OXALIC ACID. Finally, it was observed that if no acidic catalyst is used, the salts tend to catalyse a loss reaction, which is suppressed when an acid is present.

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    Cite

    APA: Copy

    HONGSIRI, WIJITTRA, DANON, BART, & DE JONG, WIEBREN. (2015). THE EFFECTS OF COMBINED CATALYSIS OF OXALIC ACID AND SEAWATER ON THE KINETICS OF XYLOSE AND ARABINOSE DEHYDRATION TO FURFURAL. INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING, 6(1), 21-30. SID. https://sid.ir/paper/327123/en

    Vancouver: Copy

    HONGSIRI WIJITTRA, DANON BART, DE JONG WIEBREN. THE EFFECTS OF COMBINED CATALYSIS OF OXALIC ACID AND SEAWATER ON THE KINETICS OF XYLOSE AND ARABINOSE DEHYDRATION TO FURFURAL. INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING[Internet]. 2015;6(1):21-30. Available from: https://sid.ir/paper/327123/en

    IEEE: Copy

    WIJITTRA HONGSIRI, BART DANON, and WIEBREN DE JONG, “THE EFFECTS OF COMBINED CATALYSIS OF OXALIC ACID AND SEAWATER ON THE KINETICS OF XYLOSE AND ARABINOSE DEHYDRATION TO FURFURAL,” INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING, vol. 6, no. 1, pp. 21–30, 2015, [Online]. Available: https://sid.ir/paper/327123/en

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