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    PROCESS FOR THE DEHYDRATION OF DIOLS
    82.
    发明专利
    PROCESS FOR THE DEHYDRATION OF DIOLS 未知

    公开(公告)号：GB1355704A

    公开(公告)日：1974-06-05

    申请号：GB2724471

    申请日：1971-04-19

    Applicant: RAFFINAGE CIE FRANCAISE

    IPC: C07C11/18 ,  B01J27/18 ,  C07C1/24 ,  C07C29/60 ,  B01J11/82 ,  C07C11/12 ,  C07C33/02 ,  C07C47/02 ,  C07C49/06

    Abstract: 1355704 Pyrophosphates COMPAGNIE FRANCAISE DE RAFFINAGE 19 April 1971 [16 April 1970] 27244/71 Heading C1A [Also in Divisions B1 C2 and C5] The Specification gives details relating to methods for preparing material which comprises at least one neutral pyrophosphate of at least one metal selected from lithium, sodium, strontium and barium and, optionally, at least one neutral orthophosphate of at least one metal selected from lithium, sodium, strontium and barium, which material may be used as catalyst in the dehydration of vicinal and non-vicinal diols. The neutral pyrophosphate may be a simple pyrophosphate, i.e. containing only one cationic metal, or a complex pyrophosphate, i.e. containing two or more cationic metals. As exemplified, lithium sodium double pyrophosphate, Li 3 NaP 2 O 7 , is prepared by combining a hot aqueous solution of sodium pyrophosphate decahydrate with a hot solution of lithium chloride, nitrate, acetate or hydroxide, drying the resulting precipitate at 110‹ C. and calcining the dried precipitate at 500‹ C., the precipitate obtained using lithium chloride being washed with ethanol prior to drying (Example I), barium pyrophosphate is prepared by combining a boiling solution of dehydrated sodium pyrophosphate with a boiling solution of barium nitrate, drying the resulting precipitate at 110‹ C. and calcining the dried precipitate at 500‹ C. (Example II), lithium pyrophosphate, Li 4 P 2 O 7 , is prepared by calcining a mixture of monoammonium orthophosphate and lithium hydroxide at a temperature above 400‹ C. (Example III), a mixture of lithium sodium double pyrophosphate and trilithium orthophosphate is prepared by combining a hot solution containing sodium pyrophosphate decahydrate and orthophosphoric acid with a hot solution of lithium hydroxide monohydrate, drying the resulting precipitate at 110‹ C. and calcining the dried precipitate at 600‹ C. (Example IV), a mixture of lithium sodium double pyrophosphate and sodium pyrophosphate is prepared by a procedure wherein equal amounts of lithium sodium double pyrophosphate and hydrated disodium orthophosphate, Na 2 HPO 4 .7H 2 O, are mixed, the resulting mixture is crushed and then wetted with water, and the resulting paste is extruded, dried at 110‹ C. and calcined at 500‹ C. (Example V) and sodium strontium double pyrophosphate is prepared by combining a boiling solution of sodium pyrophosphate decahydrate with a hot solution of strontium nitrate, drying the resulting precipitate at 110‹ C. and calcining the dried precipitate at 400‹ C. (Example VI); reference also is made to the preparation of barium pyrophosphate by thermal dehydration of barium hydrogen orthophosphate. Reference is made to Specifications 1,288,662 and 1,355,705.

    PROCESS FOR THE PRODUCTION OF OXIDATION CATALYSTS AND THE USE OF SUCH CATALYSTS IN THE PRODUCTION OF MALEIC ANHYDRIDE
    84.
    发明专利
    PROCESS FOR THE PRODUCTION OF OXIDATION CATALYSTS AND THE USE OF SUCH CATALYSTS IN THE PRODUCTION OF MALEIC ANHYDRIDE 未知

    公开(公告)号：GB1351218A

    公开(公告)日：1974-04-24

    申请号：GB2866971

    申请日：1971-06-18

    Applicant: BASF AG

    IPC: B01J27/198 ,  C07C51/25 ,  B01J11/50 ,  B01J11/52 ,  B01J11/82 ,  C07C57/14

    Abstract: 1351218 Maleic anhydride BADISCHE ANILIN- & SODA-FABRIK AG 18 June 1971 [19 June 1970] 28669/71 Heading C2C [Also in Division B1] Maleic anhydride is prepared by gas phase oxidation of n-C 4 olefin with molecular oxygen in the presence of catalyst which comprises anatase, vanadium pentoxide and phosphorus pentoxide and which has been prepared by a process wherein anatase powder, a vanadium compound and a phosphorus compound are mixed in the presence of water (the vanadium and phosphorus compounds being vanadium pentoxide and phosphorus pentoxide or compounds convertible thereto on heating in the presence of air at a temperature not exceeding 250‹ C., for example ammonium vanadate, vanadyl formate, vanadyl oxalate, phosphoric acid, pyrophosphoric acid) and the resulting mixture is dried, heated in air at a temperature not exceeding 250‹ C. (thereby to convert any such convertible vanadium and phosphorus compounds, if present, into pentoxide), reduced in size and shaped. The catalyst may consist of 80-88 weight per cent anatase, 2-5 weight per cent vanadium pentoxide and 10-15 weight per cent phosphorus pentoxide. As exemplified, maleic anhydride is prepared by contacting air and a crude C 4 hydrocarbon cut containing 63 weight per cent C 4 olefin with a fixed bed of catalyst (including comparison catalyst) prepared by a procedure wherein anatase, phosphoric acid and an aqueous solution prepared from vanadium pentoxide and oxalic acid are mixed and the resulting mixture is dried, reduced in size, heated for six hours at a temperature of from 200‹ to 500‹ C., powdered, made into paste with water, moulded into pellets and dried.

    CATALYST COMPOSITIONS
    90.
    发明专利
    CATALYST COMPOSITIONS 未知

    公开(公告)号：GB1341218A

    公开(公告)日：1973-12-19

    申请号：GB1636871

    申请日：1971-05-21

    Applicant: PHILLIPS PETROLEUM CO

    IPC: B01J23/04 ,  B01J23/14 ,  B01J27/18 ,  B01J37/10 ,  C07C5/48 ,  B01J11/82 ,  C07C5/18

    Abstract: 1341218 Dehydrogenation PHILLIPS PETROLEUM CO 21 May 1971 [21 May 1970] 16368/71 Heading C5E [Also in Division B1] Hydrocarbons are dehydrogenated by contact with O 2 and steam in the presence of a phosphorustin oxide catalyst which optionally contains a Group Ia or IIa metal and which has been activated by steaming at 1300-1600‹ F. An example describes the production of butadiene from but-2-ene.

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