PHTS-SBA-15 mesoporous molecular sieve and preparation method thereof
A PHTS-SBA-15, mesoporous molecular sieve technology, applied in the field of adsorption materials, catalyst carrier materials and their preparation, and inorganic porous materials, can solve the problems of less research and achieve the effect of reducing the cost of preparation
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Embodiment 1
[0017] Dissolve 1g of P123 in 75mL of 1M HCl solution, stir at room temperature until the solution is clear, add 2.5g of polyvinyl alcohol, stir for 4h, add 4.6mL of tetraethyl orthosilicate, continue stirring for 20h at 35°C, put the gel-like mixture into the lining poly In a stainless steel reaction kettle of tetrafluoroethylene, stand in an oven at 100°C for crystallization for 24 hours, cool to room temperature, filter, wash with deionized water until neutral, dry at 50°C, and burn in air at 550°C for 6 hours to obtain PHTS-SBA -15 molecular sieves. The XRD diffraction line of the material is as follows figure 1 As shown, the nitrogen adsorption-desorption isotherm is shown as figure 2 In the b line shown.
[0018] From figure 1 It can be seen that the synthetic SBA-15 molecular sieve X-ray diffraction has three obvious peaks at low angles, corresponding to (100), (110) and (200) peaks respectively, indicating that the PHTS-SBA-15 synthesized by this method is Molecul...
Embodiment 2
[0020] Dissolve 1g of P123 in 75mL of 1M HCl solution, stir at room temperature until completely dissolved, add 3.0g of polyvinyl alcohol, stir at 40°C for 4h, add 4.6mL of tetraethyl orthosilicate, continue to stir for 20h, put the colloidal mixture into the lining poly In a stainless steel reaction kettle of tetrafluoroethylene, put it in an oven at 100°C for 24h, cool to room temperature, filter, wash with deionized water until neutral, dry at 60°C overnight, and burn in air at 600°C for 5h to obtain PHTS -SBA-15 mesoporous molecular sieve, its nitrogen adsorption-desorption isotherm is as follows figure 2 In the a line shown.
Embodiment 3
[0022] Dissolve 1g of P123 in 75mL of 1M HCl solution, stir at room temperature until the solution is clear, add 3.5g of polypropylene alcohol, stir at 40°C for 4h, add 4.6mL of methyl orthosilicate, continue to stir for 24h, put the mixed solution into the lined polytetrafluoroethylene In a stainless steel reactor made of ethylene, put it in an oven at 100°C for 36h, cool to room temperature, filter, wash with deionized water until neutral, dry at 60°C overnight, and burn in air at 550°C for 6h to obtain PHTS-SBA -15 mesoporous molecular sieve, its nitrogen adsorption-desorption isotherm has the characteristics of PHTS mesoporous material.
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