An in-situ combo Mo-based ionic liquid and SAPO-11 catalyst for efficient biolipids hydrodeoxygenation and isomerization

Ding, Yongxin; Lin, Jun; Yu, Panjie; Zhang, Hongwei; Ma, Yongde; Cai, Zhenping; Cao, Yanning; Huang, Kuan; Jiang, Lilong

doi:10.1016/j.fuel.2023.130827

Cited by 1 publication

(1 citation statement)

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“…These sieves are characterized by a 1-dimensional channel pore system with pore sizes of 4.0 × 6.5 Å and acidic sites of “moderate” strength. This feature allows us to create on its platform, highly selective bifunctional catalysts for the hydroisomerization of n-paraffins C 7+ [ 6 , 9 , 10 ] and biofuel production [ 11 , 12 , 13 , 14 , 15 ]. SAPO-11 has demonstrated significant activity and selectivity in the isomerization of n-butene to isobutylene [ 6 ] and the isomerization of cyclohexanonoxime to caprolactam [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Changing Template/Al2O3 Ratio in Reaction Gel—An Effective Way to Regulate Nature of Intermediate Phases and Properties of SAPO-11 Molecular Sieves during Crystallization

Agliullin,

Serebrennikov,

Kutepov

2024

Materials

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A study has been conducted to investigate the formation of intermediate phases during the crystallization of SAPO-11 molecular sieves from reaction mixtures with a varying template (di-n-propylamine) DPA/Al2O3 ratio. It was found that changing the DPA/Al2O3 ratio from 1.0 to 1.8 in the initial reaction gels leads to the formation of different intermediate phases during crystallization into a SAPO-11 molecular sieve. It is shown that at the ratio template/Al2O3 = 1.0, an intermediate amorphous silicoaluminophosphate is formed; at 1.4, a mixture consisting of amorphous and layered phases forms; and at 1.8, a layered phase is present. A simple and innovative approach for controlling the morphology, size, and characteristics of primary crystals and the secondary porous structure in hierarchical SAPO-11 is proposed. The method is based on regulating the DPA/Al2O3 ratio in the reaction gel. The synthesized SAPO-11 molecular sieves with a hierarchical porous structure exhibited high selectivity in the hydroisomerization of n-hexadecane.

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