PROCESS FOR PREPARATION OF ACRYLONITRILE AND METACRYLONITRLE

    公开(公告)号:KR820000961B1

    公开(公告)日:1982-05-31

    申请号:KR780002328

    申请日:1978-07-28

    Abstract: Acrylonitrile and methacrylonitrile is prepd. by ammoxidation of propylene and isobutyrene resp., using improved catalyst which can be represents as JaQ6ZcFedDeMo12Ox, where J is an alkali metal, Tl and Ag, Q is Co, Ni, Zn, Cd, Be, Mg, Ca, Sr, Ba and Ra, Z represents Ge+Sb, Cu+W, Cu+Sn, Ce+W, Pr+Mn, Sn+Mn, Mn+W, W+Sb, Cr+Sn, W+Sn, Ge+Sn, Sb+Sn, W+P, Sb+P, Cr+Cu, Mn+Cu, Sb+Cu and Mn+P, D is Bi or Te, a = 0.03-0.05, b = 4-10, C = 0.5-7, d = 0.5-5, e - 0.5-5, and x is as necessary for balance. For example, MnWo.5 (Ko.1Ni2.5Co4.5 Fe2BiMo12Ox) supported on 20% SiO2 gave acrylonitrile with 86.4% selectivity and 68.5% conversion per pass at 420≦̸C.

    TECHNIQUE FOR FORMING MULTI-COMPONENT OXIDE COMPLEX CATALYST

    公开(公告)号:KR810000452B1

    公开(公告)日:1981-05-02

    申请号:KR780002433

    申请日:1978-08-09

    Abstract: Catalyst-prepg. technique is applicable to a wide different types of catalysts, the compns. of which are generally well-known. Such catalysts can be described by following formula(I; M = Bi, Te, Sb, Sn, Cu; N = Mo, W; A - alkali, Ti, Sm; C = Ni, Co, Mn, Mg; D = Fe, Cr, Ce, V; E = P, As, B, Sb; F = rare earth metal, Ti, Zr, Re; a = 0-4; b = 0-20; c = 0.01-20; d = 0-4; e = 0-8; f = 8-16; m = 0.01-10; n = 0.1-30).

    METHOD OF MANUFACTURE FOR METHACRYLIC DERIVATIVES

    公开(公告)号:KR800001330B1

    公开(公告)日:1980-10-28

    申请号:KR770001767

    申请日:1977-08-01

    Abstract: Methacrolein and either methacrylonitrile or isobutylene were prepd. by ammoxidn. and dehydrogenation of methy1 tertBu ether or isobutylene dimer. Thus a slurry was prepd. from 1.29parts 85% H3PO4 and aq. solns. of NH4 heptamolybdate 47.5, Co(NH3)26H2O 29.4, Ni(NO3)26H2O 16.3, Fe(NO3)9H2O 27.2, Ni(NO3)35H2O 10.9, HNO31.5, and KNO3 0.16parts and 13.15 parts silica. The slurry was dried, calcined at 274-88≦̸C, mixed with 1% graphite, formed into tablets, and calcined 5 hr at 560≦̸C to give a catalyst of compn. 82.5% K0.07Ni2.5Co0.45Fe3Bip0.5Mo12O50-17.5% SiO2.

    PREPARATION OF UNSATURATED CARBOXYLIC ESTERS FROM PROPYLENS OR ISOBUTYLENE

    公开(公告)号:KR810001558B1

    公开(公告)日:1981-10-27

    申请号:KR770001213

    申请日:1977-05-24

    Abstract: Acrylates and methacrylates were obtained by oxidative esterufucation of propylene or isobutylene (I) in the presence of O and C2H4 or an alc., in a single fluidized bed reactor contg. oxidn. catalysts at 200-600≦̸C. A reactor was charged with 80% 50:50 mixt. of Ni2.5Co4.5Fe3BiPO.5/0.5Mo12Ox and SiO2 and 20% 62:38 mixt. of V3W1.2Mo12Ox and SiO2.Air-I-MeOH(10:1:2) was fed to the reactor at 355oC and 1 atm. and after contact time 5 s the product yield was methyl methacrylate 30.0, I 53.0, acrolein 1.0, and methacrolein 2.0 mol. percent with a trace of methacrylic acid.

    OXIDATION CATALYSTS
    6.
    发明授权

    公开(公告)号:KR800000424B1

    公开(公告)日:1980-05-26

    申请号:KR750001572

    申请日:1975-07-19

    Abstract: Oxidation catalyst, useful for oxidation reaction such as oxidation of olefine, dehydrogenation and oxidation of methyl substituted aromatic compd., was prepd. by composing in the compd.(I; X = Y,Xr,Ag,S,Ce,Th,Pr,Ru,Ga,Ta,La; A = alkali metal,Tl,or its mixture;D = Ni,Co,Mg,Ca,Sr,Zn,Cd,or its mixture; E = P,As,B,W,Sb or its mixture ; O

    10.
    发明专利
    未知

    公开(公告)号:BR7703184A

    公开(公告)日:1978-01-31

    申请号:BR7703184

    申请日:1977-05-17

    Abstract: The production of acrylates and methacrylates, made by the oxidative esterification of propylene or isobutylene wherein gaseous reactants are contacted with one or more catalysts and ethylene or an alcohol can be advantageously conducted in a single fluid bed reactor to obtain the desired ester.

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