The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
Alexander Kamper - One of the best experts on this subject based on the ideXlab platform.
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ethenolysis of ricinoleic acid methyl ester an efficient way to the Oleochemical key substance methyl dec 9 enoate
RSC Advances, 2012Co-Authors: Arno Behr, S Krema, Alexander KamperAbstract:In the ethenolysis of the renewable raw material ricinoleic acid methyl ester the valuable Oleochemical key substance methyl dec-9-enoate is produced. Detailed optimizations lead to a high conversion and yield of the desired product. Another interesting product, the dec-1-ene-4-ol, is built by this reaction as coproduct. The products are accessible under mild reaction conditions and with the use of only small amounts of a commercial available homogeneous ruthenium catalyst. The results obtained are also achievable in the ethenolysis of ricinoleic acid and castor oil, under the same mild reaction conditions.
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Ethenolysis of ricinoleic acid methyl ester – an efficient way to the Oleochemical key substance methyl dec-9-enoate
RSC Advances, 2012Co-Authors: Arno Behr, S Krema, Alexander KamperAbstract:In the ethenolysis of the renewable raw material ricinoleic acid methyl ester the valuable Oleochemical key substance methyl dec-9-enoate is produced. Detailed optimizations lead to a high conversion and yield of the desired product. Another interesting product, the dec-1-ene-4-ol, is built by this reaction as coproduct. The products are accessible under mild reaction conditions and with the use of only small amounts of a commercial available homogeneous ruthenium catalyst. The results obtained are also achievable in the ethenolysis of ricinoleic acid and castor oil, under the same mild reaction conditions.
Arno Behr - One of the best experts on this subject based on the ideXlab platform.
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The mission of addition and fission – catalytic functionalization of Oleochemicals
European Journal of Lipid Science and Technology, 2015Co-Authors: Thomas Seidensticker, Andreas J. Vorholt, Arno BehrAbstract:Oleochemicals are used in the chemical industry in numerous processes and applications, having the largest share among all other renewable resources. Besides the well-known transformations performed at the carboxylic moiety of the alkyl chain, many natural occurring fatty compounds offer a further opportunity for refinement, that is: catalytic functionalization of the CC double bond. In the present review, the authors describe the mission of the scientific work that is performed at the chair of Technical Chemistry at the TU Dortmund towards selective and atom economic functionalization of Oleochemicals. Special emphasis lays on homogenous transition metal catalysis towards potential applications of the resulting products and their continuous production in miniplant scale. The given examples are discussed in the context of the work of other groups and summarize recent developments in the field of addition and fission reactions of Oleochemicals. The Mission of Addition and Fission—The functionalization of Oleochemicals using homogeneous transition metal catalysis is a very elegant way for producing valuable chemicals via many possible pathways. In this review, recent contributions to e.g. addition or cleavage reactions by Behr's group at the TU Dortmund are presented and discussed in the context of relevant literature, highlighting their significance in this important field of oleochemistry.
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Comparison of Reactivity in the Cross Metathesis of Allyl Acetate-Derivatives with Oleochemical Compounds
Journal of the American Oil Chemists' Society, 2015Co-Authors: Arno Behr, S. ToepellAbstract:The metathesis of unsaturated Oleochemicals is an excellent tool for generating α,ω-difunctional substrates, which are useful intermediates for polymer synthesis. This article describes the cross metathesis of allyl acetate and cis -1,4-diacetoxy-2-butene with methyl 10-undecenoate and methyl oleate, which are Oleochemical key substrates. Detailed optimizations led to high conversion rates and yields of the desired products under mild reaction conditions by using a low concentration of commercially available homogeneous ruthenium catalysts.
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ethenolysis of ricinoleic acid methyl ester an efficient way to the Oleochemical key substance methyl dec 9 enoate
RSC Advances, 2012Co-Authors: Arno Behr, S Krema, Alexander KamperAbstract:In the ethenolysis of the renewable raw material ricinoleic acid methyl ester the valuable Oleochemical key substance methyl dec-9-enoate is produced. Detailed optimizations lead to a high conversion and yield of the desired product. Another interesting product, the dec-1-ene-4-ol, is built by this reaction as coproduct. The products are accessible under mild reaction conditions and with the use of only small amounts of a commercial available homogeneous ruthenium catalyst. The results obtained are also achievable in the ethenolysis of ricinoleic acid and castor oil, under the same mild reaction conditions.
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Ethenolysis of ricinoleic acid methyl ester – an efficient way to the Oleochemical key substance methyl dec-9-enoate
RSC Advances, 2012Co-Authors: Arno Behr, S Krema, Alexander KamperAbstract:In the ethenolysis of the renewable raw material ricinoleic acid methyl ester the valuable Oleochemical key substance methyl dec-9-enoate is produced. Detailed optimizations lead to a high conversion and yield of the desired product. Another interesting product, the dec-1-ene-4-ol, is built by this reaction as coproduct. The products are accessible under mild reaction conditions and with the use of only small amounts of a commercial available homogeneous ruthenium catalyst. The results obtained are also achievable in the ethenolysis of ricinoleic acid and castor oil, under the same mild reaction conditions.
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Metathesis applied to unsaturated lipid compounds
Lipid Technology, 2011Co-Authors: Arno Behr, Stephanie KremaAbstract:The metathesis of unsaturated Oleochemicals is an excellent tool to generate useful products based on easily available raw materials. Through various types of metathesis different classes of substances can be produced. Metathesis reactions are of particular interest because they are 100% atom-efficient, that is no by-products are formed. Also, metathesis reactions can be carried out under mild reaction conditions with high conversions of the fatty substrates and high yields of target products. With Oleochemical metathesis it may become possible to replace some petrochemical processes and to generate products which are otherwise only poorly accessible. In this short review, several homogeneous metathesis reactions that may lead to products of industrial importance are presented and discussed.
Gregorio C. Gervajio - One of the best experts on this subject based on the ideXlab platform.
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Kirk-Othmer Encyclopedia of Chemical Technology - Fatty Acids and Derivatives from Coconut Oil
Bailey's Industrial Oil and Fat Products, 2005Co-Authors: Gregorio C. GervajioAbstract:Coconut oil and palm kernel oil are import feedstocks in the Oleochemical industry. Oleochemicals are defined as chemicals made from oils. Coconut oil is well positioned because it has the unique advantage of having its fatty acid composition falling within the carbon-chain spectrum desired for the production of Oleochemicals. C12–C14 fractions are highly sought after. The caproic to capric (C6–C10) fatty acid fractions are good materials for plasticizer range alcohol and for polyol esters. The latter are used in high-performance oil for jet engines and for a new generation of lubricants. These fractions are also basic to the preparation of medium-chain triglycerides, a highly valued dietary fat. The C12–C18 fractions are the primary raw materials for detergent-grade fatty alcohols. Coconut fatty acids can be converted to other derivatives. Principles and methods in the manufacture of various Oleochemicals are discussed. Detailed information is given for the following: fatty acids and fat-splitting procedures; methyl esters and their advantages; fatty alcohols, which are gaining favor as surfactants because they are biodegradable and a renewable resource; glycerine; monoalkyl phosphates, which are used for fireproofing, foam inhibitors, in extreme pressure lubricants, and for cosmetic preparations; and alkanolamides, used as nonionic surfactants. Preparation of other surfactants prepared from vegetable oils is discussed. These surfactants find broad use in all industries, for example, as the main ingredients in detergents, emulsifiers and sanitizers in the food industry, and as flotation agents in the mining industry. Tertiary amines are used as starting materials for the manufacture of quaternary ammonium compounds and in the preparation of amine oxides. These oxides are used in cosmetic preparation. Keywords: coconut oil; palm kernel oil; Oleochemicals; fatty acids; esters; fatty alcohols; glycerine; alkanolamides; phosphates; fat-splitting processes; high-pressure hydrogenation; Lurgi method; sulfonation; surfactants; detergents; cosmetics; emulsifiers; flotation agents
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Fatty Acids and Derivatives from Coconut Oil
Bailey's Industrial Oil and Fat Products, 2005Co-Authors: Gregorio C. GervajioAbstract:Coconut oil along with palm kernel oil are important feedstocks in the Oleochemical industry. Oleochemicals are defined as chemicals made from oils. Coconut oil is well positioned because it has the unique advantage of having fatty acid composition falling within the carbon-chain spectrum desired for the production of Oleochemicals. C12–C14 fractions are highly sought after. The caproic to capric (C6–C10) fatty acid fractions are good materials for plasticizer range alcohols and polyol esters. The latter are used in high performance oil for jet engines and a new generation of lubricants. These fractions are also basic to the preparation of mediumchain triglycerides, a highly valued dietary fat. The C12–C18 fractions are primary materials for detergent grade fatty alcohols. Coconut fatty acids can be converted to other derivatives. Details are given on fatty acids, methyl esters, fatty alcohols, glycerine, monoalkyl phosphates, alkanolamides, surfactants, and tertiary amines. Information includes chemistry, manufacture, processing, and uses. There are numerous uses for these products and are detailed. Examples include surfactants, which are main ingredients in detergents, emulsifiers in food, and flotation agents in mining. Tertiary amines are used to prepare oxides used in cosmetic preparation.
Syed Anuar Fauaad Syed Muhammad - One of the best experts on this subject based on the ideXlab platform.
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optimisation of a modified submerged bed biofilm reactor for biological Oleochemical wastewater treatment
Journal of Environmental Management, 2018Co-Authors: Z. Ismail, Nik Azmi Nik Mahmood, Noor Azrimi Umor, Md Maniruzzaman A Aziz, Shahrul Ismail, Syed Anuar Fauaad Syed MuhammadAbstract:Abstract Oleochemicals industry effluence mainly contains a high chemical oxygen demand (COD) in a range of 6000–20,000 ppm. An effective biological wastewater treatment process must be carried out before wastewater is discharged into the environment. In this study, a submerged bed biofilm reactor (SBBR) was adapted to the biological Oleochemical wastewater treatment plant observed in the present study. The effect of wastewater flow rate (100–300 mL/min), Cosmoball® percentage in the SBBR system (25–75%), and percentage of activated sludge (0–50%) were investigated in terms of COD reduction. The Box-Behnken design was used for response surface methodology (RSM) and to create a set of 18 experimental runs, which was needed for optimising the biological Oleochemical wastewater treatment. A quadratic polynomial model with estimated coefficients was developed to describe COD reduction patterns. The analysis of variance (ANOVA) shows that the wastewater flow rate was the most effective factor in reducing COD, followed by activated sludge percentage and Cosmoball® carrier percentage. Under the optimum conditions (i.e., a wastewater flow rate of 103.25 mL/min a Cosmoball® carrier percentage of 71.94%, and an activated sludge percentage of 40.50%) a COD reduction of 98% was achieved. Thus, under optimum conditions, as suggested by the BBD, SBBR systems can be used as a viable means of biological wastewater treatment in the Oleochemicals industry.
Konrad Kraling - One of the best experts on this subject based on the ideXlab platform.
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rapeseed oils high in single fatty acid contents for Oleochemical uses
Industrial Crops and Products, 1992Co-Authors: Gerhard Robbelen, Konrad KralingAbstract:Abstract In contrast to nutritional uses which depend on a balanced fatty acid mixture of mainly C16 C18 chain lengths, Oleochemical applications prefer vegetable oils that contain one single fatty acid only. Traditionally, erucic acid is the required constituent in rapeseed oil, but recently genotypes rich in oleic acid have been developed. In both cases, conventional breeding methods, e.g. pedigree selection and/or mutagenesis, have been successful. In addition, ongoing work is directed towards surpassing natural limits of maximum erucic acid content in the seed oil by molecular gene transfer methods.
