The Influence of Technological Parameters on Dehydrochlorination of Dichloropropanols

Milchert, Eugeniusz; Krzyżanowska, Anna; Wołosiak‐Hnat, Agnieszka; Paździoch, Waldemar

doi:10.1021/ie202630n

Cited by 15 publications

(12 citation statements)

References 4 publications

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“…The composition of the reactive mixtures was studied [97], concluding that 1,2-DCH is much less reactive than 1,3-DCH, although primary alkyl alcohols are more acidic than secondary alkyl alcohols. The influence of the reactor on the reaction kinetics [98,99] and of the cation on the 1,3-DCH dehydrochlorination [59,61,97,100] was also studied.…”

Section: Chemical Synthesis Of Echmentioning

confidence: 99%

Preparation and Uses of Chlorinated Glycerol Derivatives

et al. 2020

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Crude glycerol (C3H8O3) is a major by-product of biodiesel production from vegetable oils and animal fats. The increased biodiesel production in the last two decades has forced glycerol production up and prices down. However, crude glycerol from biodiesel production is not of adequate purity for industrial uses, including food, cosmetics and pharmaceuticals. The purification process of crude glycerol to reach the quality standards required by industry is expensive and dificult. Novel uses for crude glycerol can reduce the price of biodiesel and make it an economical alternative to diesel. Moreover, novel uses may improve environmental impact, since crude glycerol disposal is expensive and dificult. Glycerol is a versatile molecule with many potential applications in fermentation processes and synthetic chemistry. It serves as a glucose substitute in microbial growth media and as a precursor in the synthesis of a number of commercial intermediates or fine chemicals. Chlorinated derivatives of glycerol are an important class of such chemicals. The main focus of this review is the conversion of glycerol to chlorinated derivatives, such as epichlorohydrin and chlorohydrins, and their further use in the synthesis of additional downstream products. Downstream products include non-cyclic compounds with allyl, nitrile, azide and other functional groups, as well as oxazolidinones and triazoles, which are cyclic compounds derived from ephichlorohydrin and chlorohydrins. The polymers and ionic liquids, which use glycerol as an initial building block, are highlighted, as well.

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Section: Chemical Synthesis Of Echmentioning

confidence: 99%

Preparation and Uses of Chlorinated Glycerol Derivatives

et al. 2020

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“…Epichlorohydrin is the epoxy compound that is used in the largest quantities in the reaction with bisphenol A in the production of epoxy resins 6 . It is also used in the production of elastomers 7 , polyamideepichlorohydrin resins 8-9 , resins for water purifi cation, glycidyl ethers, polyols, and many glycidyl derivatives.…”

Section: -5mentioning

confidence: 99%

Changes in the composition of wastewater as a result of dehydrochlorination of 1,3-dichloropropan-2-ol under different process conditions

Krzyżanowska

Milchert

Bartkowiak

2014

Polish Journal of Chemical Technology

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The results of dehydrochlorination of 1,3-dichloropropan-2-ol to epichlorohydrin are reported. The process ran in the reaction-stripping column system with a continuous removal of epichlorohydrin in a steam stream. The infl uence of 10 wt% alkali solution (NaOH, Ca(OH) 2 ) and the method of distillate collection on the 1,3-dichloropropan-2-ol conversion, selectivity of transformation to epichlorohydrin and by-products, and the composition of wastewater have been analysed.

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“…Gas–solid heterogeneous systems are widely investigated and used with solid catalysts to catalyze the cyclization of DCH to ECH . Superior to generally used industrial methods, this process has a shorter reaction process, less amount of by‐products, no discharge of wastewater with lower environmental pollution, easier separation and regeneration of catalysts, and easy control of operating conditions and is more convenient for continuous production, being a production route with broad application prospects.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of epichlorohydrin from 1,3‐dichlorohydrin with solid catalysts using γ‐Al₂O₃ as carrier material

Zhang

Yang

et al. 2020

Asia-Pacific J Chem Eng

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Alkaline earth metal‐based catalysts applied in the process of dichlorohydrin cyclization into epichlorohydrin were studied. A series of solid catalysts were prepared by the equivalent‐volume impregnation method using γ‐Al2O3 as a carrier, whereas nitrates and chlorides of the three alkaline earth metals (Mg, Ca, and Ba) were employed as precursors. Their catalytic performance was investigated and compared, taking into account the main factors influencing the catalytic efficiency, such as X‐ray diffraction (XRD), N2 adsorption–desorption, energy dispersive spectrometry (EDS) coupled with TEM, and CO2 temperature‐programmed desorption (CO2‐TPD). The results have shown that the specific surface area and the number of active base sites are the main factors that are affecting the catalytic efficiency. Among the series of as‐prepared catalysts, 10BaO/γ‐Al2O3 had improved catalytic performance. Based on the obtained results for the characterization of catalysts, the increased catalytic activity could be mainly attributed to the increase in base strength resulting from BaO loading onto the surface of γ‐Al2O3. Under optimized conditions, 98.4% conversion of 1,3‐DCH and approximately 90% of ECH selectivity were achieved using 10BaO/γ‐Al2O3 with a reaction temperature of 270°C. During the reaction process, the catalytic activity of 10BaO/γ‐Al2O3 remained consistently high, and its catalytic stability was excellent.

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The Influence of Technological Parameters on Dehydrochlorination of Dichloropropanols

Cited by 15 publications

References 4 publications

Preparation and Uses of Chlorinated Glycerol Derivatives

Preparation and Uses of Chlorinated Glycerol Derivatives

Changes in the composition of wastewater as a result of dehydrochlorination of 1,3-dichloropropan-2-ol under different process conditions

Synthesis of epichlorohydrin from 1,3‐dichlorohydrin with solid catalysts using γ‐Al₂O₃ as carrier material

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The Influence of Technological Parameters on Dehydrochlorination of Dichloropropanols

Cited by 15 publications

References 4 publications

Preparation and Uses of Chlorinated Glycerol Derivatives

Preparation and Uses of Chlorinated Glycerol Derivatives

Changes in the composition of wastewater as a result of dehydrochlorination of 1,3-dichloropropan-2-ol under different process conditions

Synthesis of epichlorohydrin from 1,3‐dichlorohydrin with solid catalysts using γ‐Al2O3 as carrier material

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Synthesis of epichlorohydrin from 1,3‐dichlorohydrin with solid catalysts using γ‐Al₂O₃ as carrier material