The hydrogenation of conjugated alkadienes

The gas phase hydrogenation of buta-1 3-diene catalysed by alumina-supported Group VIII metals and metal powders and wires has been 

Catalyst h2/c2h6 AP a Temp. Butene composition (%) trans-2-Butene Sb Ref. 

For the catalysed reaction in the gas phase, the initial rate orders of 

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