JPS6147574B
PURPOSE:To obtain a catalyst compsn. based on a mixt. of P and V oxides having high activity in oxidation even at relatively low temps. by mixing a P cpd. and a V cpd. in an aq. medium under the condition making the valence of V 4.0-4.3 after which the resulting solid is calcined and washed with wat...
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| creator | KAMIMURA SHIGEO MURAYAMA MASAYOSHI |
| description | PURPOSE:To obtain a catalyst compsn. based on a mixt. of P and V oxides having high activity in oxidation even at relatively low temps. by mixing a P cpd. and a V cpd. in an aq. medium under the condition making the valence of V 4.0-4.3 after which the resulting solid is calcined and washed with water. CONSTITUTION:A tetravalent V cpd. such as VOCl 2 and a P cpd. such as metaphosphoric acid are mixed in an aq. medium at 50-150, esp. 70-100 deg.C so that the atomic ratio of P/V becomes 1.0-1.2. In place of the V cpd. a V cpd. having a valence of 4.0-4.3 may be prepared by mixing a pentavalent V cpd. such as V2O5 with a reducing substance such as hydrochloric acid. The above liquid mixt. is then evaporated to dryness to remove the aq. medium. The resulting R-V cpd. solid contg. about 1-10 wt% water is calcined at above 350, esp. 500-550 deg.C and washed with water to remove water sol. parts. The yielded catalyst compsn. shows high activity esp. in formation of maleic anhydride by oxidation of butane. |
| format | Patent |
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CONSTITUTION:A tetravalent V cpd. such as VOCl 2 and a P cpd. such as metaphosphoric acid are mixed in an aq. medium at 50-150, esp. 70-100 deg.C so that the atomic ratio of P/V becomes 1.0-1.2. In place of the V cpd. a V cpd. having a valence of 4.0-4.3 may be prepared by mixing a pentavalent V cpd. such as V2O5 with a reducing substance such as hydrochloric acid. The above liquid mixt. is then evaporated to dryness to remove the aq. medium. The resulting R-V cpd. solid contg. about 1-10 wt% water is calcined at above 350, esp. 500-550 deg.C and washed with water to remove water sol. parts. The yielded catalyst compsn. shows high activity esp. in formation of maleic anhydride by oxidation of butane.</description><language>eng</language><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; CHEMISTRY ; HETEROCYCLIC COMPOUNDS ; METALLURGY ; ORGANIC CHEMISTRY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; THEIR RELEVANT APPARATUS ; TRANSPORTING</subject><creationdate>1986</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19861020&DB=EPODOC&CC=JP&NR=S6147574B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76516</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19861020&DB=EPODOC&CC=JP&NR=S6147574B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KAMIMURA SHIGEO</creatorcontrib><creatorcontrib>MURAYAMA MASAYOSHI</creatorcontrib><title>JPS6147574B</title><description>PURPOSE:To obtain a catalyst compsn. based on a mixt. of P and V oxides having high activity in oxidation even at relatively low temps. by mixing a P cpd. and a V cpd. in an aq. medium under the condition making the valence of V 4.0-4.3 after which the resulting solid is calcined and washed with water. CONSTITUTION:A tetravalent V cpd. such as VOCl 2 and a P cpd. such as metaphosphoric acid are mixed in an aq. medium at 50-150, esp. 70-100 deg.C so that the atomic ratio of P/V becomes 1.0-1.2. In place of the V cpd. a V cpd. having a valence of 4.0-4.3 may be prepared by mixing a pentavalent V cpd. such as V2O5 with a reducing substance such as hydrochloric acid. The above liquid mixt. is then evaporated to dryness to remove the aq. medium. The resulting R-V cpd. solid contg. about 1-10 wt% water is calcined at above 350, esp. 500-550 deg.C and washed with water to remove water sol. parts. The yielded catalyst compsn. shows high activity esp. in formation of maleic anhydride by oxidation of butane.</description><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</subject><subject>CHEMISTRY</subject><subject>HETEROCYCLIC COMPOUNDS</subject><subject>METALLURGY</subject><subject>ORGANIC CHEMISTRY</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>THEIR RELEVANT APPARATUS</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1986</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOD2Cgg2MzQxNzU3ceJhYE1LzClO5YXS3AxKbq4hzh66qQX58anFBYnJqXmpJfFIOpyMjIlSBACGtxx7</recordid><startdate>19861020</startdate><enddate>19861020</enddate><creator>KAMIMURA SHIGEO</creator><creator>MURAYAMA MASAYOSHI</creator><scope>EVB</scope></search><sort><creationdate>19861020</creationdate><title>JPS6147574B</title><author>KAMIMURA SHIGEO ; MURAYAMA MASAYOSHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPS6147574BB23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1986</creationdate><topic>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</topic><topic>CHEMISTRY</topic><topic>HETEROCYCLIC COMPOUNDS</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>THEIR RELEVANT APPARATUS</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>KAMIMURA SHIGEO</creatorcontrib><creatorcontrib>MURAYAMA MASAYOSHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KAMIMURA SHIGEO</au><au>MURAYAMA MASAYOSHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>JPS6147574B</title><date>1986-10-20</date><risdate>1986</risdate><abstract>PURPOSE:To obtain a catalyst compsn. based on a mixt. of P and V oxides having high activity in oxidation even at relatively low temps. by mixing a P cpd. and a V cpd. in an aq. medium under the condition making the valence of V 4.0-4.3 after which the resulting solid is calcined and washed with water. CONSTITUTION:A tetravalent V cpd. such as VOCl 2 and a P cpd. such as metaphosphoric acid are mixed in an aq. medium at 50-150, esp. 70-100 deg.C so that the atomic ratio of P/V becomes 1.0-1.2. In place of the V cpd. a V cpd. having a valence of 4.0-4.3 may be prepared by mixing a pentavalent V cpd. such as V2O5 with a reducing substance such as hydrochloric acid. The above liquid mixt. is then evaporated to dryness to remove the aq. medium. The resulting R-V cpd. solid contg. about 1-10 wt% water is calcined at above 350, esp. 500-550 deg.C and washed with water to remove water sol. parts. The yielded catalyst compsn. shows high activity esp. in formation of maleic anhydride by oxidation of butane.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING |
| title | JPS6147574B |
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