Method for gas phase alkylation of phenol with methanol, mesoporous molecular sieve and preparation method and application thereof
A mesoporous molecular sieve and alkylation mesoporous technology, which is applied in molecular sieve catalysts, catalyst activation/preparation, preparation of organic compounds, etc., can solve the problem of low ortho selectivity and achieve remarkable results
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Embodiment 1
[0041] Weigh 0.722 grams (0.00617mol) NH 4 VO 3 and 0.261 g (0.00161 mol) C 2 h 2 o 4 4H 2 O, was added to 10.02 grams (0.556mol) of deionized water at room temperature, stirred and dissolved to obtain solution A; 2.520 grams (0.00624mol) of Fe(NO 3 ) 3 9H 2 O was added to the above solution A, stirred and dissolved to obtain solution B; weighed 10.061 grams of 20-40 mesh MCM-41, which was roasted at 823K for 8 hours, and placed in a container, then added the above solution B, and stirred evenly to obtain mixture C; Mixture C was dried at 378K for 12 hours, and then roasted at 823K for 8 hours to obtain solid D; sieve solid D, and sieve 20-40 mesh particles as phenol-methanol gas-phase alkylation Fe-V / MCM-41 catalyst.
[0042] Using Fe-V / MCM-41 as a catalyst, the ortho-selective performance of phenol-methanol gas-phase alkylation was investigated. At normal pressure, reaction temperature 713K, mass space velocity 0.8h -1 1. Under the reaction condition of methanol:ph...
Embodiment 2
[0044] Weigh 0.362 grams (0.00309mol) NH 4 VO 3 and 0.185 g (0.00114 mol) C 2 h 2 o 4 4H 2 O, was added to 10.05 grams (0.558mol) of deionized water at room temperature, stirred and dissolved to obtain solution A; weighed 5.013 grams (0.01241mol) of Fe(NO 3 ) 3 9H 2 Add O to the above solution A, stir and dissolve to obtain solution B; weigh 10.052 grams of 20-40 mesh MCM-41, which has been roasted at 823K for 8 hours, and place it in a container, then add the above solution B, and stir evenly to obtain mixture C; Mixture C was dried at 378K for 12 hours, and then roasted at 823K for 6 hours to obtain solid D; sieve solid D, and sieve 20-40 mesh particles for phenol-methanol vapor-phase alkylation of Fe-V / MCM-41 catalyst.
[0045] Using Fe-V / MCM-41 as catalyst, under normal pressure, reaction temperature 713K, mass space velocity 0.8h -1 1. Under the reaction condition of methanol:phenol=5:1 molar ratio, the reaction was carried out for 10 hours. The composition of th...
Embodiment 3
[0047] Weigh 1.445 grams (0.01235mol) NH 4 VO 3 and 0.718 g (0.00443 mol) C 2 h 2 o 4 4H 2 O, was added to 10.03 grams (0.557mol) of deionized water at room temperature, stirred and dissolved to obtain solution A; weighed 1.268 grams (0.00314mol) of Fe(NO 3 ) 3 9H 2 Add O to the above solution A, stir and dissolve to obtain solution B; weigh 10.032 grams of 20-40 mesh MCM-41, which has been roasted at 823K for 8 hours, and place it in a container, then add the above solution B, and stir evenly to obtain mixture C; Mixture C was dried at 378K for 12 hours, and then roasted at 823K for 6 hours to obtain solid D; sieve solid D, and sieve 20-40 mesh particles for phenol-methanol vapor-phase alkylation of Fe-V / MCM-41 catalyst.
[0048] Using Fe-V / MCM-41 as catalyst, under normal pressure, reaction temperature 713K, mass space velocity 0.8h -1 1. Under the reaction condition of methanol:phenol=5:1 molar ratio, the reaction was carried out for 10 hours, and the composition o...
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