Production of formaldehyde from methyl mercaptans
    31.
    发明授权
    Production of formaldehyde from methyl mercaptans 失效
    从甲硫醇生产甲醛

    公开(公告)号:US5969191A

    公开(公告)日:1999-10-19

    申请号:US944867

    申请日:1997-10-06

    申请人: Israel E. Wachs

    发明人: Israel E. Wachs

    摘要: A method wherein a gas stream containing a methyl mercaptan is passed in contact with a catalyst comprising a supported metal oxide or a bulk metal oxide in the presence of an oxidizing agent and for a time sufficient to convert at least a portion of the methyl mercaptan to formaldehyde (CH.sub.2 O) and sulfur dioxide (SO.sub.2)

    摘要翻译: 一种方法,其中含有甲硫醇的气流在氧化剂存在下与包含负载型金属氧化物或本体金属氧化物的催化剂接触并持续足够时间将至少一部分甲硫醇转化为 甲醛(CH2O)和二氧化硫(SO2)

    Aromatic carboxylic anhydride catalyst
    32.
    发明授权
    Aromatic carboxylic anhydride catalyst 失效
    芳香族羧酸酐催化剂

    公开(公告)号:US4931572A

    公开(公告)日:1990-06-05

    申请号:US353252

    申请日:1989-05-17

    摘要: In accordance with the process of this invention, an improved titanium dioxide rutile-based catalyst for molecular oxidation of a hydrocarbon to form the corresponding carboxylic anhydrides is prepared by the steps of (a) forming a catalyst precursor by depositing on titanium dioxide solids in the rutile form a discontinuous monolayer amount of at least one source of a Group IA metal oxide; (b) calcining the thus-formed catalyst precursor under conditions sufficient to convert the Group IA metal oxide source into the corresponding Group IA metal oxide; (c) depositing upon the calcined catalyst precursor a catalytically effective amount of at least one vanadium oxide source which is convertible into vanadium oxide upon heating; and (d) calcining the vanadium-deposited solids under conditions sufficient to convert the vanadium compound into vanadium oxide.

    摘要翻译: 根据本发明的方法,通过以下步骤制备用于烃的分子氧化以形成相应的羧酸酐的改进的二氧化钛金红石型催化剂:(a)通过沉积在二氧化钛固体中形成催化剂前体 金红石形成不连续单层量的至少一种IA族金属氧化物源; (b)在足以将IA族金属氧化物源转化成相应的IA族金属氧化物的条件下煅烧如此形成的催化剂前体; (c)在煅烧的催化剂前体上沉积催化有效量的至少一种氧化钒源,其在加热时可转化成氧化钒; 和(d)在足以将钒化合物转化为氧化钒的条件下煅烧钒沉积固体。

    Catalysts comprising ruthenium on titania surface modified with group VA
oxide of vanadium, niobium or tantalum
    33.
    发明授权
    Catalysts comprising ruthenium on titania surface modified with group VA oxide of vanadium, niobium or tantalum 失效
    催化剂包括用钒,铌或钽的VA族氧化物改性的二氧化钛上的钌

    公开(公告)号:US4861747A

    公开(公告)日:1989-08-29

    申请号:US34492

    申请日:1987-04-03

    IPC分类号: B01J23/648

    CPC分类号: B01J23/648

    摘要: Catalyst compositions comprising ruthenium supported on a surface modified titania support wherein said support comprises a surface modifying oxide of tantalum, niobium or mixture thereof, in a noncrystalline form, supported on said titania are useful for Fischer-Tropsch hydrocarbon synthesis reactions.

    摘要翻译: 包含负载在表面改性的二氧化钛载体上的钌的催化剂组合物,其中所述载体包含负载在所述二氧化钛上的非结晶形式的钽,铌或其混合物的表面改性氧化物可用于费 - 托合成反应。

    Catalysts for preparation of aromatic carboxylic anhydrides
    34.
    发明授权
    Catalysts for preparation of aromatic carboxylic anhydrides 失效
    用于制备芳族羧酸酐的催化剂

    公开(公告)号:US4728744A

    公开(公告)日:1988-03-01

    申请号:US782966

    申请日:1985-10-02

    摘要: In accordance with the process of this invention, an improved catalyst for molecular oxidation of an aromatic hydrocarbon to form the corresponding aromatic carboxylic anhydrides is prepared by the steps of forming a catalyst precursor by depositing on titanium dioxide solids in the anatase form a continuous monolayer amount of at least one source of zirconium dioxide, calcining the thus-formed catalyst precursor under conditions sufficient to convert the zirconium oxide source into the oxide form, depositing upon the calcined catalyst precursor a catalytically effective amount of at least one vanadium compound which is convertible into vanadium oxide upon heating and calcining the vanadium-deposited solids under conditions sufficient to convert the vanadium compound into vanadium oxide.

    摘要翻译: 根据本发明的方法,通过以下步骤制备用于分子氧化芳族烃以形成相应的芳族羧酸酐的改进的催化剂:通过以锐钛矿形式的二氧化钛固体沉积形成连续单层量形成催化剂前体 的至少一种二氧化锆源,在足以将氧化锆源转化为氧化物形式的条件下煅烧由此形成的催化剂前体,在煅烧的催化剂前体上沉积催化有效量的至少一种钒化合物,其可转化为 氧化钒加热并在足以将钒化合物转化为氧化钒的条件下煅烧钒沉积固体。

    Process for preparing carboxylic anhydride using improved catalysts
    35.
    发明授权
    Process for preparing carboxylic anhydride using improved catalysts 失效
    使用改进的催化剂制备羧酸酐的方法

    公开(公告)号:US4582912A

    公开(公告)日:1986-04-15

    申请号:US655745

    申请日:1984-10-01

    摘要: In accordance with the process of this invention, an improved catalyst for molecular oxidation of a hydrocarbon to form the corresponding carboxylic anhydrides is prepared by the steps of (a) forming a catalyst precursor by depositing on titanium dioxide solids in the anatase form at least a monolayer amount of at least one source of vanadium oxide, (b) calcining the thus-formed catalyst precursor under conditions sufficient to convert the vanadium oxide source into the oxide form, (c) depositing upon the calcined catalyst precursor a catalytically effective amount of at least one vanadium oxide source which is convertible into vanadium oxide upon heating and at least one metal oxide source selected from the group consisting of oxides of Sb, Ga, Ge, In, Tl, Pb, Se, Te, P and Bi, which is convertible into the corresponding metal oxide upon heating and which is reactive with V.sub.2 O.sub.5, and (d) calcining the vanadium and reactive metal containing catalyst solids under conditions sufficient to form the corresponding vanadium oxide and reactive metal oxides.

    摘要翻译: 根据本发明的方法,通过以下步骤制备用于烃的分子氧化以形成相应的羧酸酐的改进的催化剂:(a)通过以锐钛矿形式沉积在二氧化钛固体上至少形成催化剂前体 单层量的至少一种氧化钒源,(b)在足以将钒氧化物源转化为氧化物形式的条件下煅烧由此形成的催化剂前体,(c)在煅烧的催化剂前体上沉积催化有效量的 至少一种氧化钒源,其在加热时可转化为氧化钒,以及选自Sb,Ga,Ge,In,Tl,Pb,Se,Te,P和Bi的氧化物中的至少一种金属氧化物源,其是 加热时可转化成相应的金属氧化物,并与V2O5反应,和(d)在足以满足以下条件的条件下煅烧含钒和活性金属的催化剂固体: 形成相应的氧化钒和活性金属氧化物。