Method for preparing vinyl chloride from 1,2-dichloroethane
A dichloroethane production, dichloroethane technology, applied in the direction of dehydrohalogenation preparation, chemical recovery, etc., can solve problems that have not been seen yet, achieve good industrialization prospects, reduce energy consumption, and reduce production costs
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Embodiment 1
[0015] 25.7g pseudoboehmite (Al 2 o 3 Content 64.59wt%) is dissolved in 89.2ml deionized water, then adds 2.0g ferric nitrate [Fe(NO 3 ) 3 9H 2 O], add 76.1g phosphoric acid (85wt%) under stirring, then add 18.5g silica sol (SiO 2 Content 30wt%), finally add 49.5g triethylamine, continue to stir until uniform, move the above mixture into the reaction kettle, crystallize in an oven at 190°C for 72 hours, take out the reaction kettle and put it in cold water to cool to room temperature, filter and dry Then calcined at 550° C. for 8 hours to obtain Fe-modified SAPO-34 molecular sieve catalyst. The Fe content is 0.5 wt%.
Embodiment 2
[0017] According to the synthesis steps in Example 1, with 1.3g magnesium nitrate [Mg(NO 3 ) 2 ·6H 2 O] instead of iron nitrate [Fe(NO 3 ) 3 9H 2 O], obtain the SAPO-34 molecular sieve catalyst of Mg modification. The Mg content is 0.8 wt%.
Embodiment 3
[0019] According to the synthesis steps in Example 1, with 1.2g manganese acetate [Mn(CH 3 COO) 2 4H 2 O] instead of iron nitrate [Fe(NO 3 ) 3 9H 2 O] to obtain a Mn-modified SAPO-34 molecular sieve catalyst. The Mn content is 0.9 wt%.
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