Butadiene from Ethyl Alcohol. Catalysis in the One-and Two-Stop Processes.

Corson, B. B.; Jones, Howard; Welling, C. E.; Hinckley, J. A.; Stahly, E. E.

doi:10.1021/ie50482a039

Cited by 100 publications

(88 citation statements)

References 7 publications

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“…As reported in former literatures, 8,9 MgO-SiO 2 and ZrO 2 -SiO 2 were regarded as the two most promising catalytic system in ethanol to BD process, each for one-step and two-step, respectively. Dozens of studies were performed on MgO-SiO 2 catalytic system.…”

Section: Introductionmentioning

confidence: 93%

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Ethanol/acetaldehyde conversion into butadiene over sol–gel ZrO₂–SiO₂catalysts doped with ZnO

Liu

Han

et al. 2017

RSC Adv.

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ZnO promoted ZrO 2 -SiO 2 catalysts synthesized by a sol-gel method were investigated in the two-step ethanol transforming to 1,3-butadiene process. The influence of promoters and the preparation method of the catalysts on the catalytic performance were studied in detail and the reaction conditions were show the best catalytic activity and the catalysts prepared by the hybrid sol-gel method were superior to those prepared by the sol-gel coupled with impregnation method. The addition of promoters in the ZrO 2 -SiO 2 system decreased the total acidity and lowered the selectivity to dehydration products. The best performance with ethanol/acetaldehyde conversion of 40.7% and 1,3-butadiene selectivity of 83.3% was reached at 310 C, ethanol/acetaldehyde mole ratio of 3.5 and WHSV of 1.4 h À1 using a 0.5 wt% ZnO doped ZrO 2 -SiO 2 catalyst.

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Section: Introductionmentioning

confidence: 93%

“…The catalytic data with different ZnO loading was shown in Table 3 (line 2, [3][4][5][6][7][8]. When ZnO loading increased from 0.25 wt% to 8.0 wt%, no big change on the ethanol and acetaldehyde mixed conversion was observed, with a conversion range from 30% to 37%.…”

Section: View Article Onlinementioning

confidence: 99%

Ethanol/acetaldehyde conversion into butadiene over sol–gel ZrO₂–SiO₂catalysts doped with ZnO

Liu

Han

et al. 2017

RSC Adv.

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“…Promoters with redox properties (e.g., Ag, Cu, ZnO) have been repeatedly used to enhance the dehydrogenation of ethanol and increase the yield of butadiene in cases where these properties were absent or insufficient in the parent catalyst [4]. For instance, silica-supported tantalum oxide can become active for the Lebedev process with the use of copper to enable to conversion of ethanol to acetaldehyde [41]. The introduction of Lewis acid promoters such as ZrO 2 to improve the activity for the MPVO reaction has also been reported over basic catalysts.…”

Section: Catalyst Designmentioning

confidence: 99%

“…Another parameter that influences the reaction is the catalyst pre-treatment, usually done under inert atmosphere at high temperature to activate the material. Finally, the ratio of ethanol-to-acetaldehyde being fed in a reactor is a crucial factor of the two-step process, as it can influence the BD productivity and product distribution [18,36,41,47,48]. Since several papers have reported different optimal ratios, it is likely that this factor is governed by the nature of the catalytic system and the other reaction conditions.…”

Section: Performances and Reaction Conditionsmentioning

confidence: 99%

Recent Breakthroughs in the Conversion of Ethanol to Butadiene

et al. 2016

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1,3-Butadiene is traditionally produced as a byproduct of ethylene production from steam crackers. What is unusual is that the alternative production route for this important commodity chemical via ethanol was developed a long time ago, before World War II. Currently, there is a renewed interest in the production of butadiene from biomass due to the general trend to replace oil in the chemical industry. This review describes the recent progress in the production of butadiene from ethanol (ETB) by one or two-step process through intermediate production of acetaldehyde with an emphasis on the new catalytic systems. The different catalysts for butadiene production are compared in terms of structure-catalytic performance relationship, highlighting the key issues and requirements for future developments. The main difficulty in this process is that basic, acid and redox properties have to be combined in one single catalyst for the reactions of condensation, dehydration and hydrogenation. Magnesium and zirconium-based catalysts in the form of oxides or recently proposed silicates and zeolites promoted by metals are prevailing for butadiene synthesis with the highest selectivity of 70% at high ethanol conversion. The major challenge for further application of the process is to increase the butadiene productivity and to enhance the catalyst lifetime by suppression of coke deposition with preservation of active sites.

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“…The Ostromyslensky process was performed with better BD selectivity than the Lebedev process using pure ethanol. 11,17,25,27,34,43,48,51,52 They have considered that the condensation of acetaldehyde is a rate-limiting reaction. 12,17 It is suggested that 2B1OL, 2-butenal, 1,3-BDO, and Scheme 2.…”

Section: ¹1mentioning

confidence: 99%

Future Prospect of the Production of 1,3-Butadiene from Butanediols

Duan¹,

Yamada²,

Sato³

2016

Chem. Lett.

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Global supply of 1,3-butadiene (abbreviated as BD) is faced with problems such as unstable price of petrochemicals and variation of chemical feedstock in recent years. Many research works have been conducted to produce BD from some renewable resources instead of petroleum. Among them, biomass-derived C 4 alcohols such as 1,3-butanediol (1,3-BDO), 2,3-butanediol (2,3-BDO), and 1,4-butanediol (1,4-BDO) have been considered as alternative resources to produce BD. Direct dehydration of butanediols (BDOs) into BD, however, needs high reaction temperatures while the dehydration into their corresponding unsaturated alcohols (UOLs) such as 3-buten-2-ol (3B2OL), 2-buten-1-ol (2B1OL), and 3-buten-1-ol (3B1OL) proceeds at rather low temperatures over specific catalysts. The latter step of BDO dehydration, dehydration of UOLs to BD, is readily catalyzed by solid acids even at lower temperatures than those at which BDOs are dehydrated completely. Thus, efficient formation of UOLs from BDOs would be a key process to produce BD with high selectivity. We summarize the BD production from C 4 alcohols as well as the dehydration of BDOs to UOLs, in addition to the BD production via ethanol dimerization.

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Butadiene from Ethyl Alcohol. Catalysis in the One-and Two-Stop Processes.

Cited by 100 publications

References 7 publications

Ethanol/acetaldehyde conversion into butadiene over sol–gel ZrO₂–SiO₂catalysts doped with ZnO

Ethanol/acetaldehyde conversion into butadiene over sol–gel ZrO₂–SiO₂catalysts doped with ZnO

Recent Breakthroughs in the Conversion of Ethanol to Butadiene

Future Prospect of the Production of 1,3-Butadiene from Butanediols

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Butadiene from Ethyl Alcohol. Catalysis in the One-and Two-Stop Processes.

Cited by 100 publications

References 7 publications

Ethanol/acetaldehyde conversion into butadiene over sol–gel ZrO2–SiO2catalysts doped with ZnO

Ethanol/acetaldehyde conversion into butadiene over sol–gel ZrO2–SiO2catalysts doped with ZnO

Recent Breakthroughs in the Conversion of Ethanol to Butadiene

Future Prospect of the Production of 1,3-Butadiene from Butanediols

Contact Info

Product

Resources

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Ethanol/acetaldehyde conversion into butadiene over sol–gel ZrO₂–SiO₂catalysts doped with ZnO

Ethanol/acetaldehyde conversion into butadiene over sol–gel ZrO₂–SiO₂catalysts doped with ZnO