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METHOD OF PREPARING AND FILTERING COPRECIPITATED NICKEL-ALUMINA CATALYSTS
METHOD OF PREPARING AND FILTERING COPRECIPITATED NICKEL-ALUMINA CATALYSTS
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机译:制备和过滤规定的镍铝催化剂的方法
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摘要
A catalyst precursor which when reduced can produce a catalyst suitable for the high pressure gasification of heavy hydrocarbons to produce methane-containing gases comprises a calcined coprecipitated-alumina containing from 50-65% Ni precursor. The catalyst contains (1) from 0 to not more than 0.43% K and from 0 to not more than 0.1% Na, (2) the combined weights of Na+K does not exceed 0.011 gm atoms/100 gm of catalyst, precursor (3) the ratio of Na: K falls within the area defined by ABCDEO in FIG. 1 of the drawings and (3) at combined Na+K weights of from 0 to 0.05% the water loss is not more than 11.2%. The catalyst precursors are prepared with the aid of a filtering aid selected from (NH4)2 CO3, Na2 CO3, K2CO3, Na NO3 or K NO3 to obtain low levels of alkali. The final catalyst may be employed for steam reforming reactions to produce methane-containing gases.
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机译:当被还原时可以产生适合于重烃的高压气化以产生含甲烷气体的催化剂的催化剂前体包括含有50-65%的Ni前体的煅烧共沉淀氧化铝。催化剂包含(1)0至不超过0.43%的K和0至不超过0.1%的Na,(2)Na + K的总重量不超过0.011 gm原子/ 100 gm催化剂,前体( 3)Na∶K的比率落在图1的ABCDEO所定义的区域内。图1和(3)在Na + K的总重量为0至0.05%时,失水量不大于11.2%。借助选自(NH 4)2 CO 3,Na 2 CO 3,K 2 CO 3,Na NO 3或K NO 3的助滤剂制备催化剂前体,以获得低含量的碱。最终催化剂可用于蒸汽重整反应以产生含甲烷的气体。
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