Influence of Precursor Calcination Temperature on Structure and Performance of Ni<sub>2</sub>P/SiO<sub>2</sub> for Deoxygenation of Methyl Laurate

Related Articles

Abstract

Ni₂P/SiO₂ was prepared by temperature programmed reduction from SiO₂-supported nickel phosphate. The influence of precursor calcination temperature on the structure and performance of Ni₂P/SiO₂ catalysts for deoxygenation of methyl laurate to undecane and dodecane was investigated by means of H₂-temperature programmed reduction(H₂-TPR), X-Ray diffractions(XRD), transmission electron microscopy(TEM), N₂ adsorption, CO adsorption and NH₃-temperature programmed desorption(NH₃-TPD). With increasing calcination temperatures of the precursors from 400℃ to 800℃, the specific surface area and the pore volume of the Ni₂P/SiO₂ catalyst first remained unchanged and then decreased, Ni₂P crystallite size increased and catalyst acidity decreased. In addition, in the deoxygenation of methyl laurate, the deoxygenation activity of the Ni₂P/SiO₂ catalysts first increased and then decreased. The Ni₂P/SiO₂ catalyst which was prepared from the precursor calcined at 500℃ had higher deoxygenation activity. In addition, the molar ratio of undecane and dodecane did not change obviously at low calcination temperature of precursor and then decreased at high calcination temperature of precursor. The calcination temperature of precursor affected the deoxygenation pathway of methyl laurate on the prepared Ni₂P/SiO₂ catalyst. The deoxygenation pathway is mainly determined by the Ni₂P crystallite size and catalyst acidity.

	Service

	Email this article
	Add to my bookshelf
	Add to citation manager
	Email Alert
	RSS
	Articles by authors
	Zheng Zheng
	Zhao Sha
	Chen Jixiang

Keywords： nickel phosphide； crystallite size； calcination temperature； hydrodeoxygenation

Received 2014-05-08;

About author:

Cite this article:

Zheng Zheng, Zhao Sha, Chen Jixiang.Influence of Precursor Calcination Temperature on Structure and Performance of Ni₂P/SiO₂ for Deoxygenation of Methyl Laurate[J] Chemcial Industry and Engineering, 2016,V33(4): 11-17

[1] Yang Y, Cristina O H, Víctor A, et al. Ni₂P/SBA-15 as a hydrodeoxygenation catalyst with enhanced selectivity for the conversion of methyl oleate into n-octadecane[J]. Acs Catal, 2012, 2: 592-598
[2] Kubic?ková I, Kubi?ka D. Utilization of triglycerides and related feedstocks for production of clean hydrocarbon fuels and petrochemicals: A review[J]. Waste Biomass Valor, 2010, 1: 293-308
[3] Snåre M, Kubi?ková I, Mäki-Arvela P, et al. Heterogeneous catalytic deoxygenation of stearic acid for production of biodiesel[J]. Ind Eng Chem Res, 2006, 45: 5708-5715
[4] Zuo H, Liu Q, Wang T, et al. Hydrodeoxygenation of methyl palmitate over supported Ni catalysts for diesel-like fuel production[J]. Energy & Fuels, 2012, 26: 3747-3755
[5] Senol O I, Ryymin E M, Viljava T R, et al. Reactions of methyl heptanoate hydrodeoxygenation on sulphided catalysts[J]. J Mol Catal A: Chem, 2007, 268: 1-8
[6] Liu W, He X, Lu C. Researches in the hydrogenation properties of metal nitrides and carbides catalysts[J]. Industrial Catalysis, 2005, 13(3): 1-5
[7] Yang Y, Chen J, Shi H, et al. Deoxygenation of methyl laurate as a model compound to hydrocarbons on Ni₂P/SiO₂, Ni₂P/MCM-41, and Ni₂P/SBA-15 catalysts with different dispersions[J]. Energy & Fuels, 2013, 27: 3400-3409
[8] Yang Y, Cristina O H, Patricia P, et al. Synthesis of nickel phosphide nanorods as catalyst for the hydrotreating of methyl oleate[J]. Top Catal, 2012, 55: 991-998
[9] Oyama S T. Novel catalysts for advanced hydroprocessing: Transition metal phosphides[J]. J Catal, 2003, 216: 343-352
[10] Oyama S T, Gott T, Zhao H, et al. Transition metal phosphide hydroprocessing catalysts: A review[J]. Catalysis Today, 2009, 143: 94-107
[11] Li K, Wang R, Chen J, et al. Hydrodeoxygenation of anisole over silica-supported Ni₂P, MoP, and NiMoP catalysts[J]. Energy & Fuels, 2011, 25: 854-863
[12] Chen J, Shi H, Li L, et al. Deoxygenation of methyl laurate as a model compound to hydrocarbons on transition metal phosphide catalysts[J]. Applied Catalysis B: Environmental, 2014, 144: 870-884
[13] Oyama S T, Lee Y K. The active site of nickel phosphide catalysts for the hydrodesulfurization of 4, 6-DMDBT[J]. J Catal, 2008, 258(2): 393-400
[14] Moula M G, Suzuki S, Chun W J, et al. The first atomic-scale observation of a Ni₂P (0001) single crystal surface[J]. Chem Lett, 2006, 35: 90-91
[15] Moula M G, Suzuki S, Chun W J, et al. Surface structures of Ni₂P(0001)-Scanning tunneling microscopy (STM) and low-energy electron diffraction (LEED) characterizations[J]. Surf Interface Anal, 2006, 38(12/13): 1611-1614
[16] Prins R, Bussell M E. Metal phosphides: Preparation, characterization and catalytic reactivity[J]. Catal Lett, 2012, 142: 1413-1436
[17] Oyama S T, Wang X, Lee Y K, et al. Effect of phosphorus content in nickel phosphide catalysts studied by XAFS and other techniques[J]. J Catal, 2002, 210: 207-217
[18] Duan X, Yang T, Wang A. Role of sulfur in hydrotreating catalysis over nickel phosphide[J]. J Catal, 2009, 261: 232-240
[19] Yao N, Chen J, Zhang J, et al. Influence of support calcination temperature on properties of Ni/TiO₂ for catalytic hydrogenation of o-chloronitro-benzene to o-chloroaniline[J]. Catal Commun, 2008, 9: 1510-1516
[20] Zhang X, Zhang Q, Chen L, et al. Effect of calcination temperature of Ni/SiO₂-ZrO₂ catalyst on its hydrode oxygenation of guaiacol[J]. Chin J Catal, 2014, 35: 302-309
[21] Lee Y K, Oyama S T. Bifunctional nature of a SiO₂-supported Ni₂P catalyst for hydrotreating: EXAFS and FTIR studies[J]. J Catal, 2006, 239: 376-389