| 摘要 |
Ethyl alcohol substantially free from ether is produced by treating a mixture of ethylene and steam with sulphuric or phosphoric acid of 15--60 per cent strength at elevated temperatures and at 1000 lb pressure or more. The temperature may be 170--300 DEG C. and the pressure one to several thousand pounds or higher. The steam is preferably used in excess. A small proportion of a lithium salt may be added as a promoter. The acid may contain filling material to effect intimate contact, or may be absorbed in carriers such as pumice or silica gel. In examples, equal parts of ethylene and steam are passed: (1) into 30 per cent sulphuric acid at 255--260 DEG C. and 1000 lb pressure; (2) into sulphuric acid of 18--20 per cent at 255--260 DEG C. and 2000 lb pressure. Specifications 368,051, 368,935, and 370,136 are referred to.
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