Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia

More documents

Recommendations

Info

PP-56HYDROGENATION OF CIS-METHYL OLEATE OVER PLATINUMGROUP METALS: CIS-TRANS ISOMERIZATION IMPACTIrina Deliy 1 , Nicoletta Ravasio 2 , Rinaldo Psaro 2 , Irina Simakova 11 Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia,E-mail: simakova@catalysis.ru2 ISTM-CNR, Milano, ItalyHydrogenation of vegetable feedstocks over the platinum group metals could becarried out at the milder conditions (lower temperature and hydrogen pressure) incomparison with Ni catalysts to produce oils both for food and for industrialapplication [1]. In the previous work on methyl linoleate hydrogenation over Pd/MgO[2, 3] it was shown that at methyl linoleate conversion up to 95 % the reactionproduct is the mixture of cis- and trans-isomers of methyl oleate while methylstearate is practically missing in the reaction mixture. The cis-trans isomerization rateincreases sharply after complete methyl linoleate conversion to methyl oleate.In the present work the monounsaturated oleic acid methyl ester was chosen asmodel compound for studying of competitive hydrogenation and cis-transisomerization of unsaturated fatty acids methyl esters over carbon supported VIIIgroup metals.The liquid phase hydrogenation and isomerization of cis methyl oleate over Pd/C,Ru/C, Rh/C, Pt/C and Ir/C catalysts were investigated in the temperature range of298-373 K and hydrogen pressure within 1-10 bar using n-octane as a solvent. Theplatinum group metals supported on carbon catalysts were prepared by thedeposition-precipitation method on the carbon support Sibunit as already reported [4]and characterized by N 2 physisorption, XRD, HREM. GLC, 13 C-NMR and FTIRtechniques were employed to characterize the reaction products.The initial hydrogenation rates of methyl oleate over Pd/C, Ru/C, Rh/C, Pt/C andIr/C catalysts were estimated. It was shown that the most active catalysts for the cismethyl oleate hydrogenation are the Pt/C and Rh/C catalysts. The Ir/C catalyst hasthe low catalytic activity in hydrogenation. Over the explored catalysts the processesof cis methyl oleate double bond isomerization and hydrogenation took placeconcurrently. Among the studied catalysts based on Group 8 metals the highestcatalytic activity in the cis methyl oleate hydrogenation with minor methyl elaidateformation is revealed over Pt catalyst.146
PP-56The reaction scheme of cis methyl oleate hydrogenation and cis-trans methyloleate isomerization was proposed for the kinetic modeling. A good agreementbetween the estimated kinetic curves and the experimental data for the isomerizationand hydrogenation of methyl oleate over group 8 metals supported on carbon wasobtained. The estimated kinetic parameters calculated for all investigated catalysts(Pd/C, Rh/C, Pt/C, Ru/C and Ir/C) and the effective activation energies,, for themethyl oleate hydrogenation and cis-trans isomerization steps are obtained fromeffective kinetic constants at various temperatures using the Arrhenius equation.The influence of the catalyst amount, stirring rate, cis methyl oleateconcentration, reaction temperature, and hydrogen pressure on the cis-transisomerization rate during methyl oleate hydrogenation were investigated. The highestcatalytic activity in the cis methyl oleate hydrogenation with minor methyl elaidateformation is revealed over Pt/C catalyst. It is concluded that fatty acids methyl estershydrogenation over platinum metals at mild conditions is the promising way forselective cis methyl oleate preparation.*E aReferences:[1]. E.S. Jang, M.Yh. Jung, D.B. Min, Comprehensive Reviews in Food Science and Food Safety,2005, v. 1, pp. 22-30.[2]. I.V. Deliy, N.V. Maksimchuk, R. Psaro, N. Ravasio, V. Dal Santo, S. Recchia, E.A. Paukshtis,A.V. Golovin and V.A. Semikolenov, Appl. Catal. A: General., 2005, v. 279, pp. 99-107.[3]. D.Yu. Murzin, I.L. Simakova, J. Mol. Catal. A: Chemical, 2008, v. 286, pp.156-161.[4]. I.V. Deliy, I.L. Simakova, N. Ravasio, R. Psaro, Appl. Catal. A: General., 2009, v. 357, pp. 170-177.Acknowledgements:We would like to thank CNR-RAS cooperation program 2003-2005 for financial support.147
Page 1 and 2:
Boreskov Institute of Catalysis SB
Page 3 and 4:
International Scientific CommitteeV
Page 5 and 6:
PL-1DESIGN OF CATALYSTS AND CATALYT
Page 7 and 8:
PL-3CATALYTIC TRANSFORMATIONS FOR P
Page 9 and 10:
PL-4In this contribution the princi
Page 11 and 12:
PL-5THEORETICAL AND EXPERIMENTAL AN
Page 13 and 14:
PL-6heat exchanging internals; dyna
Page 15 and 16:
CATALYTIC CRACKING OF SUNFLOWER SEE
Page 17 and 18:
KN-3CONVERSIONS OF WOOD AND CELLULO
Page 19 and 20:
CATALYTIC FUEL-GAS CLEANING IN A ST
Page 21 and 22:
BIO4ENERGY - THE SWEDISH QUESTFOR S
Page 23 and 24:
ORAL PRESENTATIONSSection 1.CATALYS
Page 25 and 26:
OP-1-2METHANOLYSIS OF VEGETABLE OIL
Page 27 and 28:
OP-1-4SYNTHESIS, CHARACTERIZATION A
Page 29 and 30:
OP-1-6THE PRODUCTION OF MOTOR FUEL
Page 31 and 32:
HYDROTREATMENT CATALYSTS DESIGN FOR
Page 33 and 34:
CATALYTIC HYDROTREATING OF FAST PYR
Page 35:
OP-1-11BIOMASS’ PRODUCTS TREATMEN
Page 38 and 39:
OP-1-14BIO-ETHANOL - PETROCHEMICAL
Page 40 and 41:
OP-1-15USING BIOMASS-BASED FUELS FO
Page 42 and 43:
OP-2-1COMBINATION OF METAL AND ACID
Page 44 and 45:
OP-2-3CELLULOSE HYDROTHERMAL CONVER
Page 46 and 47:
OP-2-4CATALYTIC CONVERSION OF CONCE
Page 48 and 49:
OP-2-6KINETICS OF SELECTIVE OXIDATI
Page 50 and 51:
OP-2-8PROCESS FOR THE PRODUCTION OF
Page 52 and 53:
OP-2-10BIODERIVED LACTIC ACID AND L
Page 54 and 55:
OP-2-11CATALYTIC CONVERSION OF HEMI
Page 56 and 57:
OP-2-13Cu CATALYSTS FOR HYDROGENOLY
Page 58 and 59:
OP-2-15Cu-CONTAINING CATALYSTS FOR
Page 60 and 61:
OP-2-16MICROWAVE-ASSISTED EPOXIDATI
Page 62 and 63:
OP-2-18ULTRASOUND-INDUCED FORMATION
Page 64 and 65:
OP-2-20EFFECT OF Ag DOPING IN La-Mn
Page 66 and 67:
OP-2-22INSIGHTS IN GLYCEROL REFORMI
Page 68 and 69:
OP-3-1APPLICATION OF NOVEL CATALYST
Page 70 and 71:
OP-3-2REDUCING CONVERSIONS OF GLYCE
Page 72 and 73:
OP-3-4LOW-TEMPERATURE CONVERSION OF
Page 74 and 75:
OP-3-6H 2 PRODUCTION BY STEAM REFOR
Page 76 and 77:
OP-3-8CATALYTIC STEAM REFORMING OF
Page 78 and 79:
OP-3-10CATALYTIC GAS PHASE CONVERSI
Page 80 and 81:
ORAL PRESENTATIONSSection 4.BIOCATA
Page 82 and 83:
OP-4-2THE EFFECT OF OXYGEN MASS TRA
Page 84 and 85:
OP-4-4VALORIFICATION OF FERMENTATIO
Page 86 and 87:
OP-4-5MECHANISM OF ULTRASOUND-ASSIS
Page 88 and 89:
PP-1THE ORTHO - PARA CONVERSION OF
Page 90 and 91:
PP-3THREE-STAGE WASTE-FREE PROCESS
Page 92 and 93:
PP-4Н 2 О with formation superflu
Page 94 and 95:
PP-6HYDROGEN FROM FORMIC ACID DECOM
Page 96 and 97: PP-8VALORIZATION OF GLYCEROL BY CON
Page 98 and 99: PP-10BIODIESEL PRODUCTION FROM WAST
Page 100 and 101: PP-11Figure 1. CHEMPAK architecture
Page 102 and 103: PP-13HYDROCONVERSION OF VEGETABLE O
Page 104 and 105: PP-15CaO AND Al 2 O 3 SUPPORT SOLID
Page 106 and 107: PP-17CATALYTIC CRACKING OF GLUCOSE
Page 108 and 109: PP-19[DBU][Ac]: A TASK-SPECIFIC ION
Page 110 and 111: PP-21SELECTIVE CONVERSION OF CARBON
Page 112 and 113: PP-23HYDROGEN PRODUCTION BY ETHANOL
Page 114 and 115: PP-25SUB- AND SUPERCRITICAL WATER A
Page 116 and 117: PP-27THE BLENDING OF SECOND - GENER
Page 118 and 119: PP-29STUDY ON THE PRETREATMENTS OF
Page 120 and 121: PP-31THERMAL CONVERSIONS OF WOOD SA
Page 122 and 123: PP-33PHYSICOCHEMICAL PROPERTIES OF
Page 124 and 125: PP-35LOW-TEMPERATURE OXIDATION OF O
Page 126 and 127: PP-37LABORATORY EQUIPMENT FOR THE S
Page 128 and 129: PP-39FERMENTATION PROCESSES OF FREE
Page 130 and 131: PP-41THERMOCATALYTIC HYDROLYSIS AND
Page 132 and 133: PP-43OBTAINING OF SYNTHETIC FUEL FR
Page 134 and 135: PP-44hydrogen. The highest values o
Page 136 and 137: PP-46PROBLEM OF RECEPTION OF ANTIMA
Page 138 and 139: PP-48INVESTIGATION OF NEW WAYS OF B
Page 140 and 141: PP-50DEVELOPMENT OF AN EFFICIENT ME
Page 142 and 143: PP-52ZEOLITE COATINGS ON SUGAR CANE
Page 144 and 145: PP-54PREPARATION OF ADVANCED ADSORB
Page 148 and 149: PP-57CAVITATION ASSISTED DESIGH OF
Page 150 and 151: PP-59KINETICS OF CATALYTIC GASIFICA
Page 152 and 153: PP-61ORGANOSOLV LIGNIN AS CHEMICALS
Page 154 and 155: PP-62which were taken in preset qua
Page 156 and 157: PP-64EXTRACTION OF HUMIC ACIDS FROM
Page 158 and 159: PP-66THE INVESTIGATION OF ASPECTS O
Page 160 and 161: LIST OF PARTICIPANTSNeisiani ABDOLL
Page 162 and 163: Andrey CHISTYAKOVA.V. Topchiev Inst
Page 164 and 165: Yusuf ISA MAKARFIM.V. Lomonosov Mos
Page 166 and 167: Nikolaj LAPINInstitute of Microelec
Page 168 and 169: Vitaly ORDOMSKYDepartment of Chemis
Page 170 and 171: Irina SIMAKOVABoreskov Institute of
Page 172 and 173: Elena VIALICHPerm State UniversityB
Page 174 and 175: ORAL PRESENTATIONS.................
Page 176 and 177: OP-2-18 Andreeva D., Schäferhans J
Page 178 and 179: PP-15 Dias A.P., Puna J.F., Gomes J
Page 180 and 181: PP-50Rustamov M.I., Abad-zade Kh.I.
Page 182: INTERNATIONAL CONFERENCECATALYSIS F
show all

Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?