Hydrolysis of palm oil catalyzed by macroporous cation-exchanged resin
Hydrolysis of palm oil was studied using four types of commercial H+‐exchanged resin with acidity in the region of 5×10−3 eq g−1 but with different pore volumes, specific surface areas, and pore diameters. The reaction was carried out in a stirred batch reactor in the liquid phase with continuous st...
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| Veröffentlicht in: | Journal of the American Oil Chemists' Society 1999-04, Vol.76 (4), p.529-533 |
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| container_title | Journal of the American Oil Chemists' Society |
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| creator | Yow, C.J Liew, K.Y |
| description | Hydrolysis of palm oil was studied using four types of commercial H+‐exchanged resin with acidity in the region of 5×10−3 eq g−1 but with different pore volumes, specific surface areas, and pore diameters. The reaction was carried out in a stirred batch reactor in the liquid phase with continuous steam injection for up to 14 h. The rate of hydrolysis did not depend on total pore volume and specific surface area but did depend on pore diameter. On exchanging H+ with La3+, Co2+, and Na+, the rate of reaction decreased markedly and was dependent on the degree of exchange, demonstrating that hydrolysis was catalyzed by H+ sites. The activation energy for the hydrolysis of the triglycerides was estimated to be 240 kJ mol−1. A procedure to estimate the rates of the different stages of hydrolysis and hence the individual rate constants of the forward and reverse reactions is described. The procedure yielded reasonable parameters for the reaction at 155°C up to 6 h of reaction time, when about 75 mol% of triglycerides was hydrolyzed. |
| doi_str_mv | 10.1007/s11746-999-0036-0 |
| format | Article |
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The reaction was carried out in a stirred batch reactor in the liquid phase with continuous steam injection for up to 14 h. The rate of hydrolysis did not depend on total pore volume and specific surface area but did depend on pore diameter. On exchanging H+ with La3+, Co2+, and Na+, the rate of reaction decreased markedly and was dependent on the degree of exchange, demonstrating that hydrolysis was catalyzed by H+ sites. The activation energy for the hydrolysis of the triglycerides was estimated to be 240 kJ mol−1. A procedure to estimate the rates of the different stages of hydrolysis and hence the individual rate constants of the forward and reverse reactions is described. The procedure yielded reasonable parameters for the reaction at 155°C up to 6 h of reaction time, when about 75 mol% of triglycerides was hydrolyzed.</description><identifier>ISSN: 0003-021X</identifier><identifier>EISSN: 1558-9331</identifier><identifier>DOI: 10.1007/s11746-999-0036-0</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer-Verlag</publisher><subject>Acidity ; Batch reactors ; Biological and medical sciences ; Carbon dioxide ; Cation exchanging ; Cation‐exchanged resin ; Cobalt ; Fat industries ; fatty acids ; field crops ; food composition ; Food industries ; food quality ; Fundamental and applied biological sciences. Psychology ; Hydrogen ; Hydrolysis ; kinetics ; Liquid phases ; Palm oil ; Rate constants ; Reaction time ; Resins ; Specific surface ; Surface area ; Triglycerides</subject><ispartof>Journal of the American Oil Chemists' Society, 1999-04, Vol.76 (4), p.529-533</ispartof><rights>1999 American Oil Chemists' Society (AOCS)</rights><rights>1999 INIST-CNRS</rights><rights>AOCS Press 1999.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4039-f426fb2bef3d441e33d02feda88eb95c2ac098b87c953fa5f683a0a8347476ba3</citedby><cites>FETCH-LOGICAL-c4039-f426fb2bef3d441e33d02feda88eb95c2ac098b87c953fa5f683a0a8347476ba3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1007%2Fs11746-999-0036-0$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1007%2Fs11746-999-0036-0$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27903,27904,45552,45553</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1837669$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Yow, C.J</creatorcontrib><creatorcontrib>Liew, K.Y</creatorcontrib><title>Hydrolysis of palm oil catalyzed by macroporous cation-exchanged resin</title><title>Journal of the American Oil Chemists' Society</title><description>Hydrolysis of palm oil was studied using four types of commercial H+‐exchanged resin with acidity in the region of 5×10−3 eq g−1 but with different pore volumes, specific surface areas, and pore diameters. The reaction was carried out in a stirred batch reactor in the liquid phase with continuous steam injection for up to 14 h. The rate of hydrolysis did not depend on total pore volume and specific surface area but did depend on pore diameter. On exchanging H+ with La3+, Co2+, and Na+, the rate of reaction decreased markedly and was dependent on the degree of exchange, demonstrating that hydrolysis was catalyzed by H+ sites. The activation energy for the hydrolysis of the triglycerides was estimated to be 240 kJ mol−1. A procedure to estimate the rates of the different stages of hydrolysis and hence the individual rate constants of the forward and reverse reactions is described. The procedure yielded reasonable parameters for the reaction at 155°C up to 6 h of reaction time, when about 75 mol% of triglycerides was hydrolyzed.</description><subject>Acidity</subject><subject>Batch reactors</subject><subject>Biological and medical sciences</subject><subject>Carbon dioxide</subject><subject>Cation exchanging</subject><subject>Cation‐exchanged resin</subject><subject>Cobalt</subject><subject>Fat industries</subject><subject>fatty acids</subject><subject>field crops</subject><subject>food composition</subject><subject>Food industries</subject><subject>food quality</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Hydrogen</subject><subject>Hydrolysis</subject><subject>kinetics</subject><subject>Liquid phases</subject><subject>Palm oil</subject><subject>Rate constants</subject><subject>Reaction time</subject><subject>Resins</subject><subject>Specific surface</subject><subject>Surface area</subject><subject>Triglycerides</subject><issn>0003-021X</issn><issn>1558-9331</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><recordid>eNqFkcFrFTEQxoMo-Gz7B3hyQfEWO8nsZpNjeVgrFHqohd7CbDapW_I2z6QPXf9689iC4MVTmMzv-5j5hrG3Aj4JgP68CNG3ihtjOAAqDi_YRnSd5gZRvGQbqL8cpLh_zd6U8lhLjbLbsMurZcwpLmUqTQrNnuKuSVNsHD1RXH77sRmWZkcup33K6VCOjSnN3P9y32l-qP3syzSfsleBYvFnz-8Ju7v8_G17xa9vvnzdXlxz1wIaHlqpwiAHH3BsW-ERR5DBj6S1H0znJDkwetC9Mx0G6oLSSEAa277t1UB4wj6uvvucfhx8ebK7qTgfI82-TmelQIlKqQq-_wd8TIc819msVKrVSmmpKyVWqu5XSvbB7vO0o7xYAfaYq11ztTVXe8zVQtV8eHam4iiGTLObyl-hxl4pU7F-xX5O0S__97UXN9tb6ORR-W5VBkqWHnI1v7uVIBCkqXfrFf4BHtCROg</recordid><startdate>199904</startdate><enddate>199904</enddate><creator>Yow, C.J</creator><creator>Liew, K.Y</creator><general>Springer-Verlag</general><general>Springer</general><general>Springer Nature B.V</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>4T-</scope><scope>K9.</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope></search><sort><creationdate>199904</creationdate><title>Hydrolysis of palm oil catalyzed by macroporous cation-exchanged resin</title><author>Yow, C.J ; Liew, K.Y</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4039-f426fb2bef3d441e33d02feda88eb95c2ac098b87c953fa5f683a0a8347476ba3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>Acidity</topic><topic>Batch reactors</topic><topic>Biological and medical sciences</topic><topic>Carbon dioxide</topic><topic>Cation exchanging</topic><topic>Cation‐exchanged resin</topic><topic>Cobalt</topic><topic>Fat industries</topic><topic>fatty acids</topic><topic>field crops</topic><topic>food composition</topic><topic>Food industries</topic><topic>food quality</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Hydrogen</topic><topic>Hydrolysis</topic><topic>kinetics</topic><topic>Liquid phases</topic><topic>Palm oil</topic><topic>Rate constants</topic><topic>Reaction time</topic><topic>Resins</topic><topic>Specific surface</topic><topic>Surface area</topic><topic>Triglycerides</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yow, C.J</creatorcontrib><creatorcontrib>Liew, K.Y</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Docstoc</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Journal of the American Oil Chemists' Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yow, C.J</au><au>Liew, K.Y</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hydrolysis of palm oil catalyzed by macroporous cation-exchanged resin</atitle><jtitle>Journal of the American Oil Chemists' Society</jtitle><date>1999-04</date><risdate>1999</risdate><volume>76</volume><issue>4</issue><spage>529</spage><epage>533</epage><pages>529-533</pages><issn>0003-021X</issn><eissn>1558-9331</eissn><abstract>Hydrolysis of palm oil was studied using four types of commercial H+‐exchanged resin with acidity in the region of 5×10−3 eq g−1 but with different pore volumes, specific surface areas, and pore diameters. The reaction was carried out in a stirred batch reactor in the liquid phase with continuous steam injection for up to 14 h. The rate of hydrolysis did not depend on total pore volume and specific surface area but did depend on pore diameter. On exchanging H+ with La3+, Co2+, and Na+, the rate of reaction decreased markedly and was dependent on the degree of exchange, demonstrating that hydrolysis was catalyzed by H+ sites. The activation energy for the hydrolysis of the triglycerides was estimated to be 240 kJ mol−1. A procedure to estimate the rates of the different stages of hydrolysis and hence the individual rate constants of the forward and reverse reactions is described. The procedure yielded reasonable parameters for the reaction at 155°C up to 6 h of reaction time, when about 75 mol% of triglycerides was hydrolyzed.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer-Verlag</pub><doi>10.1007/s11746-999-0036-0</doi><tpages>5</tpages></addata></record> |
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| ispartof | Journal of the American Oil Chemists' Society, 1999-04, Vol.76 (4), p.529-533 |
| issn | 0003-021X 1558-9331 |
| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete; SpringerLink Journals |
| subjects | Acidity Batch reactors Biological and medical sciences Carbon dioxide Cation exchanging Cation‐exchanged resin Cobalt Fat industries fatty acids field crops food composition Food industries food quality Fundamental and applied biological sciences. Psychology Hydrogen Hydrolysis kinetics Liquid phases Palm oil Rate constants Reaction time Resins Specific surface Surface area Triglycerides |
| title | Hydrolysis of palm oil catalyzed by macroporous cation-exchanged resin |
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