Spray dried zeolite catalyst
    1.
    发明申请
    Spray dried zeolite catalyst 审中-公开
    喷雾干燥的沸石催化剂

    公开(公告)号:US20100168449A1

    公开(公告)日:2010-07-01

    申请号:US12317749

    申请日:2008-12-29

    Abstract: An attrition-resistant catalyst is prepared contacting a spray dried zeolite with a modifying agent. The modifying agent is (i) a halogen-free compound hydrolyzable to an oxide selected from the group consisting of silica, alumina, titania, zirconia, niobia, and mixtures thereof; or (ii) a sol selected from the group consisting of silica, alumina, titania, zirconia, niobia, and mixtures thereof.

    Abstract translation: 使喷雾干燥的沸石与改性剂接触制备耐磨耗催化剂。 改性剂是(i)可水解成选自二氧化硅,氧化铝,二氧化钛,氧化锆,氧化铌及其混合物的氧化物的无卤素化合物; 或(ii)选自二氧化硅,氧化铝,二氧化钛,氧化锆,氧化铌及其混合物的溶胶。

    Process for synthesizing 4,4'-dihydroxydiphenyl sulfone
    10.
    发明授权
    Process for synthesizing 4,4'-dihydroxydiphenyl sulfone 失效
    合成4,4'-二羟基二苯砜的方法

    公开(公告)号:US5041677A

    公开(公告)日:1991-08-20

    申请号:US500752

    申请日:1990-03-28

    CPC classification number: C07C317/00

    Abstract: Process for synthesizing 4,4' bisphenol sulfone involving reacting phenol and sulfuric acid in an inert reaction solvent, and maintaining the reaction solvent at temperatures of about 160 to 200.degree. C. and at a predetermined level sufficient to maintain a saturated 4,4' isomer solution and an unsaturated 2,4' isomer solution, thereby selectively yielding 4,4' bisphenol sulfone with minimal amounts of 2,4' isomer by-product.

    Abstract translation: 合成4,4'双酚砜的方法,包括在惰性反应溶剂中使苯酚和硫酸反应,并将反应溶剂保持在约160至200℃的温度和足以维持饱和的4,4' 异构体溶液和不饱和2,4'异构体溶液,从而选择性地产生具有最少量的2,4'异构体副产物的4,4'双酚砜。

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