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    Method of preparing spheroidal eta-alumina particles
    146.
    发明授权
    Method of preparing spheroidal eta-alumina particles 失效
    制备球状氧化铝颗粒的方法

    公开(公告)号：US3887493A

    公开(公告)日：1975-06-03

    申请号：US37967873

    申请日：1973-07-16

    Applicant: UNIVERSAL OIL PROD CO

    Inventor： HAYES JOHN C

    IPC: B01J20/08 ,  B01J35/08 ,  C01F7/02 ,  C01F7/42 ,  B01J11/44

    CPC classification number: B01J35/08 ,  B01J20/08 ,  C01F7/02 ,  C01F7/428 ,  C01P2004/32

    Abstract: A method of preparing spheroidal eta-alumina particles. An acidic alumina hydrosol is commingled with a gelling agent and dispersed as droplets in a hot oil suspending media to form firm, spherical, hydrogel particles. The particles are washed at a temperature of from about 25* to about 60* C., and at a pH of at least about 5.5, with an aqueous salt solution having a salt concentration substantially equivalent to that of the aqueous phase of the hydrogel particles. The salt concentration is reduced during the washing process until the wash-water is saltfree and the pH is adjusted to at least about 9. Spheroidal bayerite alumina particles are produced which, upon calcination, yield spheroidal eta-alumina particles.

    Abstract translation: 制备球状等氧化铝颗粒的方法。 酸性氧化铝水溶胶与胶凝剂混合，并以液滴形式分散在热油悬浮介质中以形成牢固的球形水凝胶颗粒。 颗粒在约25℃至约60℃的温度和至少约5.5的pH下用盐水浓度基本上等于水凝胶颗粒的水相的盐水溶液洗涤 。 在洗涤过程中盐浓度降低，直到洗涤水不含盐，并且将pH调节至至少约9.产生球形三羟铝石氧化铝颗粒，其在煅烧时产生球状的氧化铝颗粒。

    Method of preparing a catalyst for the hydrorefining of residual oils
    147.
    发明授权
    Method of preparing a catalyst for the hydrorefining of residual oils 失效

    公开(公告)号：US3746660A

    公开(公告)日：1973-07-17

    申请号：US3746660D

    申请日：1971-12-06

    Applicant: UNIVERSAL OIL PROD CO

    Inventor： O HARA M

    IPC: B01J23/88 ,  B01J37/08 ,  C10G45/08 ,  B01J11/40

    CPC classification number: B01J23/883 ,  B01J21/12 ,  B01J23/88 ,  B01J35/08 ,  B01J37/08 ,  C10G2300/107

    Abstract: AN IMPROVED METHOD OF PREPARING A CATALYST COMPRISING A GROUP VI-B AND GROUP VIII METAL IMPREGNATED ON A REFRACTORY INORGANIC OXIDE CARRIER MATERIAL, SAID CATALYST BEING PARTICULARLY USEFUL IN THE HYDROREFINING OF RESIDUAL OILS OF HIGH ASPHALTENE CONTENT. THE CARRIER MATERIAL, PRIOR TO IMPREGNATION WITH THE GROUP VI-B AND GROUP VIII METAL COMPONENTS, IS DRIED TO REDUCE THE VOLATILE CONTENT THEREOF TO NOT LESS THAN ABOUT 30 WT. PERCENT, AND CALCINED IN AN OXIDIZING ATMOSPHERE AT A TEMPERATURE INCREASING FROM ABOUT 200* TO ABOUT 600*C. IN A PERIOD FROM ABOUT 30 TO ABOUT 90 MINUTES, AND THEREAFTER AT A TEMPERATURE OF FROM ABOUT 600* TO ABOUT 800*C. THE CATALYST SO PREPARED IS DESIGNED PRIMARILY FOR THE CONVERSION OF C7ISOLUBLE ASPHALTENES.

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