Methyl Palmitate Hydrodeoxygenation over Silica‐Supported Nickel Phosphide Catalysts in Flow Reactor: Experimental and Kinetic Study
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Journal of Chemical Technology and Biotechnology
ISSN: 0268-2575
|
| Output data |
Year: 2019,
Volume: 94,
Number: 9,
Pages: 3007-3019
Pages count
: 13
DOI:
10.1002/jctb.6111
|
| Tags |
hydrodeoxygenation; kinetic modelling; nickel phosphide catalyst; reaction scheme |
| Authors |
Shamanaev Ivan V
1
,
Deliy Irina V
1
,
Aleksandrov Pavel V
1
,
Reshetnikov Sergey I
1
,
Bukhtiyarova Galina A
1
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis
|
|
Funding (1)
|
1
|
Federal Agency for Scientific Organizations
|
0303-2016-0012 (V.47.1.4.)
|
BACKGROUND: The search for alternative sources of fuels is crucial for sustainable development now and in the near future. Biomass attracts much attention as an environmentally friendly, green and CO2-neutral source of fuels. Hydrodeoxygenation (HDO) of fatty acid-based feedstocks such as nonedible vegetable oil, waste cooking oil and animal fat is a versatile technology for producing efficient fuels. HDO schemes are often contradictory and have different numbers of stages. In the work reported, a highly active nickel phosphide catalyst was obtained and methyl palmitate (MP) HDO kinetic modelling was carried out to elucidate the HDO reaction scheme. RESULTS: The effect of reduction temperature (400–600 °C) on the catalytic properties of the catalyst in MP HDO was evaluated and the most active catalyst (after reduction at 450 °C) was used in the kinetic experiments. The experimental data were collected in a wide range of MP conversion. The reaction scheme of MP HDO was elucidated by means of mathematical modelling which was specified by successive consideration of the experimental results of HDO selectivities at low MP conversions (1–10%), additional experiments of alcohol HDO (dodecanol-1 as an analogue for hexadecanol-1) and analysis of gas-phase products. CONCLUSIONS: In accordance with the results obtained, both hydrolysis of MP and hydrogenolysis of C&bond;OCH3 bond should be considered for describing the conversion of MP to intermediate compounds. This finding could explain the synergetic effect of acid and metal centres, which has been reported in the literature on aliphatic ester HDO, and justify the higher activity of bifunctional catalysts in this reaction. © 2019 Society of Chemical Industry. © 2019 Society of Chemical Industry