| 摘要 |
<p>1,262,339. Hydrodesulphurisation catalysts. ESSO RESEARCH & E NG . CO. 17 April, 1969 [3 May, 1968], No. 19717/69. Heading B1E. [Also in Division C5] A hydrocarbon hydrodesulphurisation catalyst comprises Mo or W oxide or sulphide plus Co or Ni oxide or sulphide (or mixtures) on a SiO 2 -Al 2 O 3 base containing 1 to 6% SiO 2 , and has a maximum of pores in the range 30 to 70Š. It may be prepared from aluminium sulphate, chloride or nitrate and sodium silicate; or from sodium aluminate containing silica by precipitation with aluminium halides, nitrate or sulphate or with HCl, HNO 3 or H 2 SO 4 , followed by impregnating with metal salts. Preferably the support is prepared in the presence of galatonic acid, araboric acid, xylonic acid, mannonic acid or gluconic acid or a sodium, potassium, zinc, magnesium, calcium or lithium salt thereof and has an apparent bulk density of less than 0.70 g./cc.</p> |
