| 摘要 |
Catalytic vapor phase process wherein the feed stream comprising, on a molar basis, the sum of which is 100%, 10-32% of at least one linear unsaturated C4-hydrocarbon selected from 1-butene, 2-butene and 1,3-butadiene, 10-25% oxygen, 3-30% water and 13-77% inert diluent, is contacted with a modified bismuth molybdenum oxide catalyst at 350 DEG -600 DEG C. at a pressure of at least 1 atmosphere (about 100 kPa) for 0.1-10 seconds, said catalyst being selected from: (a) BiMoaMbQcRdOx wherein M is at least one element selected from In, Ce, Cr, Fe and Cu, Q is at least one element selected from V, P, Sb and Te, R is Na or Ag, a is 0.7-60.0, b is 0.1-33.0, c is 0-7.0, d is 0-1.5 and x is such a number as is necessary to satisfy the valences of the elements, with the proviso that a/1+b>/=0.5 and a/1+b+c>/=0.19 and the proviso that c>0 when d>0; and (b) BiMoaAsbZcOx wherein Z is at least one element selected from Na and Ca, a is 1.3-2.0, b is 0.1-0.3, c is 0.3-0.7 and x is such a number as is necessary to satisfy the valences of the elements, to produce an off-gas containing at least 1% furan.
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