Abstract: BACKGROUND: SAPO-11 is known to be an active and selective component of isomerization catalysts. Ni2P/SAPO-11 catalysts are promising in one-step hydrodeoxygenation–hydroisomerization (HDO-HIS) of fatty acid-based feedstocks. But strong interaction with the support and inappropriate acidity can result in low activity and selectivity. Boron is a promising modifier which is capable of solving both of the problems. RESULTS: SAPO-11 powders were synthesized using different Si/Al ratios (0.05, 0.10, 0.15). Boron was used as a modifier ((B) SAPO-11) to tune the acidity and surface properties of the materials (B/Al = 0.15). A 70:30 mass ratio of (B)SAPO-11 and AlOOH was used to synthesize supports for Ni2P catalysts. The catalysts were prepared by in situ phosphidation of Ni/(B)SAPO-11-Al2O3 and were tested in methyl palmitate HDO-HIS in a continuous-flow reactor at T = 290–340 °C, P = 2.0 MPa, LHSV = 5.3 h−1, H2/liquid = 600 N cm3 cm−3. The supports and catalysts were studied using inductively coupled plasma atomic emission spectrometry, N2 physisorption, NH3 temperature-programmed desorption, X-ray diffraction, transmission electron microscopy and 11B and 31P solid-state NMR. Boron was shown to decrease cracking activity resulting in higher yield of long-chain alkanes. CONCLUSION: The highest isomerization activity (80% iso-C15–C16 at 340 °C) was shown by the sample with Si/Al = 0.10 due to optimal amount of acid sites. Boron proved to be an efficient component to tune SAPO-11 acidity and decrease cracking at 340 °C.

Cite: Shamanaev I.V. , Yakovlev I.V. , Toktarev A.V. , Pakharukova V.P. , Gerasimov E.Y. , Lapina O.B.
(B)SAPO-11 as a Support for Ni2P Catalyst for Isoalkane Production from Methyl Palmitate
Journal of Chemical Technology and Biotechnology. 2025. DOI: 10.1002/jctb.70100 OpenAlex

Dates:

Submitted:	Jul 25, 2025
Published online:	Nov 6, 2025

Identifiers:

OpenAlex:

W4415982544

Citing: Пока нет цитирований

Altmetrics: