Small-grain stepped hole sapo-11 molecular sieve and hydrocarbon isomerization catalyst and preparation method
A technology of SAPO-11 and stepped pores, which is applied in the direction of molecular sieve catalyst, isomerization hydrocarbon production, molecular sieve and alkali exchange phosphate, etc., can solve the unsatisfactory performance improvement of SAPO-11 molecular sieve and the low external area of SAPO-11 molecular sieve , can not meet the reaction requirements and other problems, to achieve the effect of improving the diffusion limitation problem, solving the diffusion limitation problem, and reducing the grain size
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Embodiment 1
[0059] This embodiment provides a SAPO-11-P-De molecular sieve, the preparation method of which is the same as that of Comparative Example 1, the difference being that "9.0g of pseudo-boehmite and 5.0g of TPOS were slowly added successively under vigorous stirring. , 7.6g of DPA and 11.3g of propanol were stirred and mixed evenly" and changed to "slowly add 9.0g of pseudo-boehmite, 5.0g of TPOS, 7.6g of DPA, 0.053g of dedecyl trimethyl Ammonium bromide and 11.3g propanol are stirred and mixed evenly ", other conditions are constant, and the molecular sieve that makes is marked as SAPO-11-P-De.
[0060] The powder XRD diffraction pattern of this SAPO-11-P-De molecular sieve is as figure 1 As shown in the SAPO-11-P-De curve, the SEM image is as follows Figure 4 shown, its N 2 Adsorption-desorption isotherms such as figure 2 Shown in the SAPO-11-P-De curve.
[0061] This embodiment also provides a catalyst for isomerization of hydrocarbons, the preparation method of which i...
Embodiment 2
[0063] This example provides a SAPO-11-P-Do molecular sieve, the preparation method of which is the same as in Example 1, the difference is that "0.053g dedecyltrimethylammonium bromide" is changed to 0.058g dodecyl Trimethylammonium bromide ", other conditions are constant, and the molecular sieve that makes is denoted as SAPO-11-P-Do.
[0064] The powder XRD diffraction pattern of this SAPO-11-P-Do molecular sieve is as figure 1 As shown in the SAPO-11-P-Do curve, the SEM image is as follows Figure 5 shown, its N 2 Adsorption-desorption isotherms such as figure 2 Shown in the SAPO-11-P-Do curve.
[0065] This example also provides a hydrocarbon isomerization catalyst, the preparation method of which is the same as that of Example 1, and the prepared catalyst is recorded as NiMo / SAPO-11-P-Do.
Embodiment 3
[0067] This example provides a SAPO-11-P-T molecular sieve, the preparation method of which is the same as in Example 1, the difference is that "0.053g dedecyltrimethylammonium bromide" is changed to "0.063g tetradecyltrimethylammonium bromide" Methyl ammonium bromide ", other conditions are constant, and the molecular sieve prepared is recorded as SAPO-11-P-T.
[0068] The powder XRD diffraction pattern of this SAPO-11-P-T molecular sieve is as figure 1 As shown in the SAPO-11-P-T curve, the SEM image is shown in Image 6 shown, its N 2 Adsorption-desorption isotherms such as figure 2 Shown in the SAPO-11-P-T curve.
[0069] This example also provides a hydrocarbon isomerization catalyst, the preparation method of which is the same as that of Example 1, and the prepared catalyst is marked as NiMo / SAPO-11-P-T.
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