Economics of maleic anhydride production from C-4 feedstocks

Emig, G.; Martin, F.

doi:10.1016/0920-5861(87)85002-2

Cited by 41 publications

(7 citation statements)

References 4 publications

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“…4 Because of controls on the maximum permissible levels of benzene emission, the alternative and more carbon efficient sources of n-butane or n-butene are becoming more widely used. MA is used in the manufacture of pharmaceutical, agricultural and other chemical products such as unsaturated polyester resins, lubricating oil additives and food additives.…”

Section: Introductionmentioning

confidence: 99%

Reactions of maleic anhydride over TiO2 (001) single crystal surfaces

Wilson

Titheridge

Kieu

et al. 2000

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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The reactions of maleic anhydride (MA) have been investigated on the “near” stoichiometric and substoichiometric surfaces of TiO2 by temperature programmed desorption (TPD). Moreover, self-consistent field semiempirical PM3 calculations of MA over relaxed and unrelaxed Ti13O45H38 rutile clusters [simulating the rutile TiO2(011) surface] were conducted on two modes of adsorption. The dissociation of one C–O–C bond following adsorption on a Ti5c4+–O2− site results in a more stable adsorbed species (by 0.5 eV) than the nondissociatively adsorbed molecule. Desorption of a wide range of products in several temperature domains was observed during MA-TPD. In addition to the decomposition pathway to carbon monoxide (CO), carbon dioxide (CO2), acetylene (HC≡CH), and ketene (H2C=C=O), the desorption of several coupling products is also seen: vinylacetylene (HC≡CCH=CH2), butene, traces of butadiene ((H2C=CHCH=CH2), and benzene (C6H6). Over the substoichiometric surfaces these coupling products are more accentuated while the decomposition pathway to ketene decreased.

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Section: Introductionmentioning

confidence: 99%

Reactions of maleic anhydride over TiO2 (001) single crystal surfaces

Wilson

Titheridge

Kieu

et al. 2000

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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“…Dimethyl maleate (DMM) as an important chemical intermediate is widely used in pharmaceutical, pesticide, chemical fiber, automobile and other industries [1][2][3]. Moreover, the hydrogenation products of DMM, such as γ-butyrolactone (GBL), 1,4-butanediol (BDO) and tetrahydrofuran (THF) are all high value-added chemical intermediates (the reaction pathways of DMM as shown in Scheme 1) [4][5][6][7]. With the frequent breakthrough of the oxidation technology of n-butane to maleic anhydride and the decrease of production cost, it will be of significance for the development of the downstream products of maleic anhydride.…”

Section: Introductionmentioning

confidence: 99%

Effects of Basic Promoters on the Catalytic Performance of Cu/SiO2 in the Hydrogenation of Dimethyl Maleate

Ying

Han

et al. 2019

Catalysts

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Continuous hydrogenation of dimethyl maleate (DMM) toγ-butyrolactone (GBL), 1,4-butanediol (BDO) and tetrahydrofuran (THF) is a promising process in industry. In this study, Cu-M/SiO2 catalysts modified by basic promoters (M = Mg, Ca, Sr, Ba, La) were prepared, and characterized by physical adsorption of N2, in situ XRD, H2-TPR, CO2-TPD. With the addition of basic promoters, the basicity of Cu-M/SiO2 catalysts was improved. The particle size of CuO on Cu-M/SiO2 catalyst was increased after modified by Mg, Ca, Sr, Ba. However, the CuO particle was decreased on the Cu-La/SiO2 catalyst. The series of Cu-M/SiO2 catalyst was applied to the hydrogenation of DMM. The addition of basic promoters increased the selectivity of GBL during the hydrogenation for the basic promoters improved the dehydrogenation of BDO to GBL in alkaline sites. Furthermore, Cu-La/SiO2 presented a higher activity in the hydrogenation of DMM, due to its higher dispersion of Cu.

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“…8 We sought to utilize the unusual properties of metal-zeolite systems to activate ethane for its ammoxidation reaction [eqn. (1)]. After washing with 1 l of deionized water, the zeolite was dried overnight at 110 °C.…”

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confidence: 99%