Method for preparing cyclic carbonate by converting carbon dioxide through cobalt-based catalyst
A cyclic carbonate, cobalt-based catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve the problem of low efficiency and save energy , the effect of simple separation and easy availability of raw materials
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Embodiment 1
[0020] The cobalt-based catalyst conversion carbon dioxide of the present embodiment prepares the method for cyclic carbonate, and the steps are as follows:
[0021] Into a 10mL stainless steel autoclave, sequentially add 50mg (active component cobalt 0.5mol%) of catalyst conjugated cobalt porphyrin microporous polymer material, 12.5mmol propylene oxide and 0.9mmol cocatalyst tetra-n-butyl bromide Ammonium, feed carbon dioxide and keep the pressure at 0.1MPa, stir at 25°C for 48 hours, cool at room temperature, slowly release the remaining carbon dioxide, filter and separate the catalyst, and obtain the isolated yield of cyclic carbonate after purification 99%.
Embodiment 2
[0023] The cobalt-based catalyst conversion carbon dioxide of the present embodiment prepares the method for cyclic carbonate, and the steps are as follows:
[0024] Into a 10mL stainless steel autoclave, sequentially add 50mg (active component cobalt 0.4mol%) of catalyst conjugated cobalt porphyrin microporous polymer material, 12.5mmol of butylene oxide and 0.9mmol of cocatalyst tetra-n-butyl bromide ammonium chloride, feed carbon dioxide and keep the pressure at 0.1 MPa, stir at 25°C for 48 hours, cool at room temperature, slowly release the remaining carbon dioxide, filter and separate the catalyst, and obtain the isolated product of cyclic carbonate after purification The rate is 97%.
Embodiment 3
[0026] The cobalt-based catalyst conversion carbon dioxide of the present embodiment prepares the method for cyclic carbonate, and the steps are as follows:
[0027] Into a 10mL stainless steel autoclave, sequentially add 50mg (active component cobalt 0.5mol%) of catalyst conjugated cobalt porphyrin microporous polymer material, 12.5mmol epichlorohydrin and 0.9mmol cocatalyst tetra-n-butyl bromide ammonium chloride, feed carbon dioxide and keep the pressure at 0.1 MPa, stir at 25°C for 48 hours, cool at room temperature, slowly release the remaining carbon dioxide, filter and separate the catalyst, and obtain the isolated product of cyclic carbonate after purification The rate is 99%.
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