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A HYDROPROCESSING CATALYST FOR TREATING A HYDROCARBON FEED HAVING AN ARSENIC CONCENTRATION AND A METHOD OF MAKING AND USING SUCH CATALYST
A HYDROPROCESSING CATALYST FOR TREATING A HYDROCARBON FEED HAVING AN ARSENIC CONCENTRATION AND A METHOD OF MAKING AND USING SUCH CATALYST
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机译:用于处理具有砷浓度的烃类进料的加氢处理催化剂及其制备和使用方法
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摘要
A catalyst that is useful for the removal of arsenic from hydrocarbon feedstocks. The catalyst comprises an alumina support, underbedded molybdenum and phosphorus components, and an overlayer of a nickel component. The catalyst further has the unique property of having a surface nickel-to-molybdenum atomic ratio of greater than 1.8 with a bulk nickel-to-molybdenum atomic ratio of less than 2.2. The nickel accessibility factor of the catalyst is greater than 1.2. The catalyst is prepared by the application of two metals impregnation steps with associated calcination steps that in combination provide for the underbedded metals and overlayer of nickel.
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