| 摘要 |
<p>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 an empirical formula selected from: (a) PbM1_aM2_bOx where M<1> 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 M<2> 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, M<1> and M<2> in the oxidation states in which they exist in the composition, with the proviso that when M<2> is bismuth, M<1> cannot be gallium or thallium; and when M<2> is antimony, M<1> cannot be indium, thallium, germanium, phosphorus, or thorium; and (b) BiM3_aM4_bOx where M<3> is at least one element selected from zinc, germanium, thorium, the lanthanides, Groups 1a, 3b, 4b, and 8 of the Periodic Table of the Elements and mixtures thereof, and M<4> is at least one element selected from indium, silver, Group 2a of the Periodic Table of the Elements, and mixtures thereof, 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 bismuth, M<3>, and M<4> in the oxidation state in which they exist in the composition to yield the toluene dehydrocoupled toluene product. 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 oxygencontaining gas is heated with the toluene.</p> |
