Hydrodeoxygenation–Isomerization of Methyl Palmitate over SAPO-11-Supported Ni-Phosphide Catalysts Full article
| Journal |
Catalysts
ISSN: 2073-4344 |
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| Output data | Year: 2022, Volume: 12, Number: 11, Article number : 1486, Pages count : 17 DOI: 10.3390/catal12111486 | ||
| Tags | hydrodeoxygenation; isomerization; Ni-phosphide; SAPO-11; methyl palmitate; biofuel; green diesel | ||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0004 |
| 2 | Russian Science Foundation | 22-13-00371 |
Abstract:
Ni-phosphide catalysts on SAPO-11 were studied in the hydrodeoxygenation–isomerization of methyl palmitate (C15H31COOCH3—MP). The catalysts were synthesized using temperature-programmed reduction (TPR) of a phosphate precursor ((NH4)2HPO4 and Ni(CH3CH2COO)2), TPR of a phosphite precursor (H3PO3 and Ni(OH)2), and using phosphidation of Ni/SAPO-11 by PPh3 in the liquid phase. The samples were characterized by ICP-AES chemical analysis, N2 physisorption, NH3-TPD, XRD, and TEM. First, the screening of the catalysts prepared by the TPR method was carried out in a semi-batch autoclave to determine the influence of the preparation method and conditions on one-pot HDO–isomerization (290–380 °C, 2–3 MPa). The precursor’s nature and the amount of phosphorus strongly influenced the activity of the catalysts and their surface area and acidity. Isomerization occurred only at a low P content (Ni/P = 2/1) and blocking of the SAPO-11 channels by unreduced phosphates at higher P contents did not allow us to obtain iso-alkanes. Experiments with liquid phosphidation samples in a continuous-flow reactor also showed the strong dependence of activity on phosphidation duration as well as on Ni content. The highest yield of isomerized products (66% iso-C15–16 hydrocarbons, at complete conversion of O-containing compounds, 340 °C, 2 MPa, and LHSV = 5.3 h−1) was obtained over 7% Ni2P/SAPO-11 prepared by the liquid phosphidation method.
Cite:
Shamanaev I.V.
, Shamanaeva I.A.
, Parkhomchuk E.V.
, Bukhtiyarova G.A.
Hydrodeoxygenation–Isomerization of Methyl Palmitate over SAPO-11-Supported Ni-Phosphide Catalysts
Catalysts. 2022. V.12. N11. 1486 :1-17. DOI: 10.3390/catal12111486 WOS Scopus РИНЦ AN OpenAlex
Hydrodeoxygenation–Isomerization of Methyl Palmitate over SAPO-11-Supported Ni-Phosphide Catalysts
Catalysts. 2022. V.12. N11. 1486 :1-17. DOI: 10.3390/catal12111486 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Oct 28, 2022 |
| Published print: | Nov 1, 2022 |
| Accepted: | Nov 18, 2022 |
| Published online: | Nov 21, 2022 |
Identifiers:
| Web of science: | WOS:000894982000001 |
| Scopus: | 2-s2.0-85149449471 |
| Elibrary: | 53422102 |
| Chemical Abstracts: | 2022:3112070 |
| OpenAlex: | W4309711099 |