| 摘要 |
<p>1,268,678. Sulphiding catalysts. GLANZSTOFF A.G. 22 July, 1969 [10 Aug., 1968], No. 36795/69. Heading B1E. [Also in Division C2] Catalyst comprises non-alkaline alumina which has been activated by a deposition of 0.2 to 10% by weight of silicic acid; the catalyst is preferably neutral, i.e. washing with water produces neutral washings.</p> |
