| 摘要 |
<p>20-21-0143A DEHYDROCOUPLING OF TOLUENE Toluene dehydrocoupled products are produced by heating toluene in the vapor phase with an inorganic metal/ oxygen composition which functions as an oxygen carrier and has the empirical formula: where M1 is at least one element selected from silver, zinc, gallium, indium, thallium, germanium, phosphorus, arsenic, thorium, the lanthanides, Groups 1a, 2a, 3b, 4b, and 8 of the Periodic Table of the Elements, and mixtures thereof, and M2 is an element selected from bismuth and antimony, and wherein a is 0.01 to 10, b is 0 to 10, and x is a number taken to satisfy the average valences of lead, M1 and M2 in the oxidation states in which they exist in the composition to yield the toluene dehydrocoupled toluene product, with the proviso that when M2 is bismuth, M1 cannot be gallium or thallium; and when M2 is antimony, M1 cannot be indium, thallium, germanium, phosphorus, or thorium. Alternatively, the same inorganic metal/oxygen composition can be employed as a catalyst or as a combination catalyst/ oxygen carrier for the dehydrocoupling reaction when oxygen or an oxygen-containing gas is heated with the toluene.</p> |
