Clean technology in the production of epichlorohydrin

Bijsterbosch, Jowi W.; Das, Arabinda; Kerkhof, F.P.J.M.

doi:10.1016/0959-6526(94)90041-8

Cited by 22 publications

(21 citation statements)

References 3 publications

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“…TCP emerges as a side product and environmental pollutant from past industrial processes for the synthesis of epichlorohydrin. 37 These are nowadays replaced by the less problematic glycerol to epichlorohydrin (GTE) process, e.g. at the Dow Chemical Company.…”

Section: Occurrence Of 123-trichloropropanementioning

confidence: 99%

Perspectives of genetically engineered microbes for groundwater bioremediation

Janssen

Stucki²

2020

Environ. Sci.: Processes Impacts

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Section: Occurrence Of 123-trichloropropanementioning

confidence: 99%

Perspectives of genetically engineered microbes for groundwater bioremediation

Janssen

Stucki²

2020

Environ. Sci.: Processes Impacts

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“…-catalyst: 10 wt% of Pd imbedded on activated carbon, -propene to oxygen molar ratio = 1:3, temperature = 60 o C; pressure = 0.1MPa; HNO 3 concentration = 1.7 mol/dm 3 ; reaction time = 1h, catalyst concentration = 53.3 g/dm 3 . The total of the selectivity of acetoxylation of propene to PG and PGA was 90 mol% in the described conditions.…”

Section: Acetoxylation Of Methyl Tert-butyl Ether To Tert-butyl Acetamentioning

confidence: 99%

Topical and prospective processes of acetoxylation

Lewandowski

Bartkowiak

Milchert

2009

Polish Journal of Chemical Technology

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The latest acetoxylation processes have been described in this work: oxidative acetoxylation of propene to allyl acetate, acetoxylation of propene to propene glycol and its acetates, acetoxylation of methyl tert-butyl ether and oxidative acetoxylation of cyclohexene by hydrogen peroxide. Acetoxylation of 1,3-butadiene, isobutene and toluene were presented together with a short description of the acetoxylation catalysts.

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“…As an important chemical precursor and fine chemical product, epichlorohydrin (ECH) is used to synthesize epoxy resins, chlorohydrins rubber, pesticides, and plasticizers . Some current industrial processes to prepare ECH include propylene chlorination, propylene acetate chlorination, and glycerol chlorination .…”

Section: Introductionmentioning

confidence: 99%

“…During the saponification, DCH is epoxidized to ECH using an excess of either sodium hydroxide solution or calcium hydroxide solution as base; however, this method faces drawbacks including the production of by‐products and liquid waste and the corrosion of equipment. In addition, there are many problems in the purification and separation of the product . Compared with homogeneous catalysis, solid base catalysis enables easy product separation, therefore, avoiding large volumes of wastewater production, environmental pollution and conserving labor, materials, and financial resources.…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization, and catalytic behavior of xMO/yNaZSM‐5 catalyst for dichlorohydrin dechlorination reaction

Liang

Yang

et al. 2018

Asia-Pacific J Chem Eng

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A series of loaded CaO or MgO catalysts with NaZSM-5 zeolites as supports were prepared by incipient wetness impregnation and used to catalyze the dechlorination of dichlorohydrin (DCH) to epichlorophydrin (ECH). The resulting prepared catalysts were characterized by X-ray diffraction, N 2 adsorption-desorption, CO 2 temperature-programmed desorption, and the Hammett indicator method. The reaction results demonstrated that the MgO/ NaZSM-5 catalyst exhibited better catalytic performance compared with the CaO/NaZSM-5. In addition, the effect of different MgO loadings on the activities of as-synthesized catalysts was investigated. Notable, the activity of MgO/ NaZSM-5 catalyst increased with the increased loading content of MgO. Based on the obtained characterization for the xMO/yNaZSM-5 catalysts, the increased catalytic activity could be attributed to both the increase of Brunauer-Emmett-Teller values and the increase in base strength resulting from MgO loading onto the NaZSM-5 zeolite. In addition, the calcination temperature of the sample was also an important factor for the DCH dechlorination reaction. Under optimized conditions, 99.8% conversion of 1,3-DCH and 95.5% yield of ECH were achieved using 10MgO/80NaZSM-5 zeolite calcined at 550°C under atmospheric pressure, a reaction temperature of 330°C, weight hourly space velocity of DCH 1.06 hr −1 , a nitrogen feed flow rate of 100 ml/ min and a DCH saturator temperature of 80°C.

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Clean technology in the production of epichlorohydrin

Cited by 22 publications

References 3 publications

Perspectives of genetically engineered microbes for groundwater bioremediation

Perspectives of genetically engineered microbes for groundwater bioremediation

Topical and prospective processes of acetoxylation

Preparation, characterization, and catalytic behavior of xMO/yNaZSM‐5 catalyst for dichlorohydrin dechlorination reaction

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