Reaction of ethanol over hydroxyapatite affected by Ca/P ratio of catalyst

The mineral hydroxyapatite [HAP; Ca 10(PO 4) 6(OH) 2] is the chief component of animal bones and teeth. It also is known to function as a catalyst with both acid and base sites, depending on the manner in which it is synthesized. We closely studied the reaction of ethanol over HAP using catalysts of...

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Veröffentlicht in:	Journal of catalysis 2008-10, Vol.259 (2), p.183-189
Hauptverfasser:	Tsuchida, Takashi, Kubo, Jun, Yoshioka, Tetsuya, Sakuma, Shuji, Takeguchi, Tatsuya, Ueda, Wataru
Format:	Artikel
Sprache:	eng
Schlagworte:	1-Butanol Acid basic catalyst Biochemistry Ca/P ratio Catalysis Catalysts Chemical synthesis Chemistry Ethanol Ethanol activation Exact sciences and technology General and physical chemistry Guerbet alcohol Guerbet reaction Hydroxyapatite Mineralogy Probability Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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container_title	Journal of catalysis
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creator	Tsuchida, Takashi Kubo, Jun Yoshioka, Tetsuya Sakuma, Shuji Takeguchi, Tatsuya Ueda, Wataru
description	The mineral hydroxyapatite [HAP; Ca 10(PO 4) 6(OH) 2] is the chief component of animal bones and teeth. It also is known to function as a catalyst with both acid and base sites, depending on the manner in which it is synthesized. We closely studied the reaction of ethanol over HAP using catalysts of different Ca/P molar ratios. These were prepared by controlling the pH of the solution during precipitation synthesis. We found that the distribution of acid sites and basic sites on the catalyst surface varied with the Ca/P ratio of HAP. The yields of ethylene, 1-butanol, and 1,3-butadiene were correlated with the ratio of acid sites and basic sites. We further found that yields of higher alcohols, such as 1-butanol, that are known as Guerbet alcohols and are characteristic products of ethanol over HAP, are functions of the probability of ethanol activation ( α) on the catalyst surface.
doi_str_mv	10.1016/j.jcat.2008.08.005
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We further found that yields of higher alcohols, such as 1-butanol, that are known as Guerbet alcohols and are characteristic products of ethanol over HAP, are functions of the probability of ethanol activation ( α) on the catalyst surface.</description><subject>1-Butanol</subject><subject>Acid basic catalyst</subject><subject>Biochemistry</subject><subject>Ca/P ratio</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Chemical synthesis</subject><subject>Chemistry</subject><subject>Ethanol</subject><subject>Ethanol activation</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Guerbet alcohol</subject><subject>Guerbet reaction</subject><subject>Hydroxyapatite</subject><subject>Mineralogy</subject><subject>Probability</subject><subject>Theory of reactions, general kinetics. Catalysis. 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Nomenclature, chemical documentation, computer chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tsuchida, Takashi</creatorcontrib><creatorcontrib>Kubo, Jun</creatorcontrib><creatorcontrib>Yoshioka, Tetsuya</creatorcontrib><creatorcontrib>Sakuma, Shuji</creatorcontrib><creatorcontrib>Takeguchi, Tatsuya</creatorcontrib><creatorcontrib>Ueda, Wataru</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Journal of catalysis</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tsuchida, Takashi</au><au>Kubo, Jun</au><au>Yoshioka, Tetsuya</au><au>Sakuma, Shuji</au><au>Takeguchi, Tatsuya</au><au>Ueda, Wataru</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Reaction of ethanol over hydroxyapatite affected by Ca/P ratio of catalyst</atitle><jtitle>Journal of catalysis</jtitle><date>2008-10-25</date><risdate>2008</risdate><volume>259</volume><issue>2</issue><spage>183</spage><epage>189</epage><pages>183-189</pages><issn>0021-9517</issn><eissn>1090-2694</eissn><coden>JCTLA5</coden><abstract>The mineral hydroxyapatite [HAP; Ca 10(PO 4) 6(OH) 2] is the chief component of animal bones and teeth. 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subjects	1-Butanol Acid basic catalyst Biochemistry Ca/P ratio Catalysis Catalysts Chemical synthesis Chemistry Ethanol Ethanol activation Exact sciences and technology General and physical chemistry Guerbet alcohol Guerbet reaction Hydroxyapatite Mineralogy Probability Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
title	Reaction of ethanol over hydroxyapatite affected by Ca/P ratio of catalyst
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