• Teguh Riyanto Laboratory of Plasma-Catalysis (R3.5), Center of Research and Services - Diponegoro University (CORES-DU), Integrated Laboratory, Universitas Diponegoro, Semarang, Central Java 50275, Indonesia
  • I. Istadi Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro, Semarang, Central Java 50275, Indonesia
  • Didi D. Anggoro Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro, Semarang, Central Java 50275, Indonesia
  • Bunjerd Jongsomjit Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand




Hydrogen-free deoxygenation, Palmitic acid, Thermodynamic analysis, Feasibility study


Four models were investigated to study the feasibility of the hydrogen-free deoxygenation of palmitic acid to hydrocarbons through the stoichiometric thermodynamic equilibrium analysis. The reaction conditions have been varied to estimate the equilibrium reactions composition (temperature (T) of 200 – 600 °C, pressure (P) of 1 – 20 bar, and H2/Palmitic acid ratio of 0 – 10). It was found that the hydrogen-free deoxygenation of palmitic acid was thermodynamically favorable with complete conversion (≈100%) at all investigated reaction conditions. The equilibrium products composition was significantly affected by reaction temperature. The main-formed hydrocarbon was C1532 at low temperatures and C15H30 at high temperatures. However, the product composition of reaction equilibrium was not affected by the reaction pressure. Even though the internal hydrogen was generated, the hydrodeoxygenation reaction pathways were not too favorable because the hydrodeoxygenation product and its intermediates were negligible.


Zhou, G., Li, J., Yu, Y., Li, X., Wang, Y., Wang, W., Komarneni, S. 2014). Optimizing the distribution of aromatic products from catalytic fast pyrolysis of cellulose by ZSM-5 modification with boron and co-feeding of low-density polyethylene. Applied Catalysis A: General, 487: 45–53. DOI: 10.1016/j.apcata.2014.09.009.

Ansari, K.B., Arora, J.S., Chew, J.W., Dauenhauer, P.J., Mushrif, S.H. 2019. Fast Pyrolysis of Cellulose, Hemicellulose, and Lignin: Effect of Operating Temperature on Bio-oil Yield and Composition and Insights into the Intrinsic Pyrolysis Chemistry. Industrial and Engineering Chemistry Research, 58(35): 15838–15852. DOI: 10.1021/acs.iecr.9b00920.

Wulandari, N.M., Efiyanti, L., Trisunaryanti, W., Oktaviano, H.S., Bahri, S., Ni’mah, Y.L., Larasati, S. 2021. Effect of CTAB Ratio to the Characters of Mesoporous Silica Prepared from Rice Husk Ash in the Pyrolysis of a–cellulose. Bulletin of Chemical Reaction Engineering & Catalysis, 16(3): 632–640. DOI: 10.9767/bcrec.16.3.10828.632-640.

Al-Muttaqii, M., Kurniawansyah, F., Prajitno, D.H., Roesyadi, A. 2019. Bio-kerosene and Bio-gasoil from Coconut Oils via Hydrocracking Process over Ni-Fe/HZSM-5 Catalyst. Bulletin of Chemical Reaction Engineering & Catalysis, 14(2): 309–319. DOI: 10.9767/bcrec.14.2.2669.309-319.

Trisunaryanti, W., Triyono, T., Ghoni, M.A., Fatmawati, D.A., Mahayuwati, P.N., Suarsih, E. 2020. Hydrocracking of Calophyllum inophyllum Oil Employing Co and/or Mo Supported on γ-Al2O3 for Biofuel Production. Bulletin of Chemical Reaction Engineering & Catalysis, 15(3): 743–751. DOI: 10.9767/bcrec.15.3.8592.743-751.

Paramesti, C., Trisunaryanti, W., Larasati, S., Santoso, N.R., Sudiono, S., Triyono, T., Fatmawati, D.A. 2021. The Influence of Metal Loading Amount on Ni/Mesoporous Silica Extracted from Lapindo Mud Templated by CTAB for Conversion of Waste Cooking Oil into Biofuel. Bulletin of Chemical Reaction Engineering & Catalysis, 16(1): 22–30. DOI: 10.9767/bcrec.16.1.9442.22-30.

Wang, Q., Song, H., Pan, S., Dong, N., Wang, X., Sun, S. 2020. Initial pyrolysis mechanism and product formation of cellulose: An Experimental and Density functional theory(DFT) study. Scientific Reports, 10(1): 3626. DOI: 10.1038/s41598-020-60095-2.

Riyanto, T., Istadi, I., Jongsomjit, B., Anggoro, D.D., Pratama, A.A., Al Faris, M.A. 2021. Improved Brønsted to Lewis (B/L) Ratio of Co- and Mo-Impregnated ZSM-5 Catalysts for Palm Oil Conversion to Hydrocarbon-Rich Biofuels. Catalysts, 11(11): 1286. DOI: 10.3390/catal11111286.

Gurdeep Singh, H.K., Yusup, S., Quitain, A.T., Abdullah, B., Ameen, M., Sasaki, M., Kida, T., Cheah, K.W. 2020. Biogasoline production from linoleic acid via catalytic cracking over nickel and copper-doped ZSM-5 catalysts. Environmental Research, 186: 109616. DOI: 10.1016/j.envres.2020.109616.

Mäki-Arvela, P., Kubickova, I., Snåre, M., Eränen, K., Murzin, D.Y. 2007. Catalytic Deoxygenation of Fatty Acids and Their Derivatives. Energy & Fuels, 21(1): 30–41. DOI: 10.1021/ef060455v.

Hermida, L., Abdullah, A.Z., Mohamed, A.R. 2015. Deoxygenation of fatty acid to produce diesel-like hydrocarbons: A review of process conditions, reaction kinetics and mechanism. Renewable and Sustainable Energy Reviews, 42: 1223–1233. DOI: 10.1016/j.rser.2014.10.099.

Krishnan, S.G., Pua, F.-L., Tan, E.-S. 2022. Synthesis of Magnetic Catalyst Derived from Oil Palm Empty Fruit Bunch for Esterification of Oleic Acid: An Optimization Study. Bulletin of Chemical Reaction Engineering & Catalysis, 17(1): 65–77. DOI: 10.9767/bcrec.17.1.12392.65-77.

Mohammed, I.Y., Abakr, Y.A., Yusup, S., Alaba, P.A., Morris, K.I., Sani, Y.M., Kazi, F.K. 2017. Upgrading of Napier grass pyrolytic oil using microporous and hierarchical mesoporous zeolites: Products distribution, composition and reaction pathways. Journal of Cleaner Production, 162: 817–829. DOI: 10.1016/j.jclepro.2017.06.105.

Palizdar, A., Sadrameli, S.M. 2020. Catalytic upgrading of biomass pyrolysis oil over tailored hierarchical MFI zeolite: Effect of porosity enhancement and porosity-acidity interaction on deoxygenation reactions. Renewable Energy, 148: 674–688. DOI: 10.1016/j.renene.2019.10.155.

Sowe, M.S., Lestari, A.R., Novitasari, E., Masruri, M., Ulfa, S.M. 2022. The Production of Green Diesel Rich Pentadecane (C15) from Catalytic Hydrodeoxygenation of Waste Cooking Oil using Ni/Al2O3-ZrO2 and Ni/SiO2-ZrO2. Bulletin of Chemical Reaction Engineering & Catalysis, 17(1): 135–145. DOI: 10.9767/bcrec.17.1.12700.135-145.

Istadi, I., Riyanto, T., Khofiyanida, E., Buchori, L., Anggoro, D.D., Sumantri, I., Putro, B.H.S., Firnanda, A.S. 2021. Low-oxygenated biofuels production from palm oil through hydrocracking process using the enhanced Spent RFCC catalysts. Bioresource Technology Reports, 14: 100677. DOI: 10.1016/j.biteb.2021.100677.

Loe, R., Santillan-Jimenez, E., Morgan, T., Sewell, L., Ji, Y., Jones, S., Isaacs, M.A., Lee, A.F., Crocker, M. 2016. Effect of Cu and Sn promotion on the catalytic deoxygenation of model and algal lipids to fuel-like hydrocarbons over supported Ni catalysts. Applied Catalysis B: Environmental, 191: 147–156. DOI: 10.1016/j.apcatb.2016.03.025.

Loe, R., Huff, K., Walli, M., Morgan, T., Qian, D., Pace, R., Song, Y., Isaacs, M., Santillan-Jimenez, E., Crocker, M. 2019. Effect of Pt Promotion on the Ni-Catalyzed Deoxygenation of Tristearin to Fuel-Like Hydrocarbons. Catalysts, 9(2): 200. DOI: 10.3390/catal9020200.

Lestari, S., Mäki-Arvela, P., Simakova, I., Beltramini, J., Lu, G.Q.M., Murzin, D.Y. 2009. Catalytic Deoxygenation of Stearic Acid and Palmitic Acid in Semibatch Mode. Catalysis Letters, 130(1–2): 48–51. DOI: 10.1007/s10562-009-9889-y.

Sahebdelfar, S., Ravanchi, M.T. 2017. Deoxygenation of propionic acid: Thermodynamic equilibrium analysis of upgrading a bio-oil model compound. Renewable Energy, 114: 1113–1122. DOI: 10.1016/j.renene.2017.07.100.

Snåre, M., Kubičková, I., Mäki-Arvela, P., Eränen, K., Murzin, D.Y. 2006. Heterogeneous catalytic deoxygenation of stearic acid for production of biodiesel. Industrial and Engineering Chemistry Research, 45(16): 5708–5715. DOI: 10.1021/ie060334i.

Peng, B., Zhao, C., Kasakov, S., Foraita, S., Lercher, J.A. 2013. Manipulating catalytic pathways: Deoxygenation of palmitic acid on multifunctional catalysts. Chemistry - A European Journal, 19(15): 4732–4741. DOI: 10.1002/chem.201203110.

Ding, R., Wu, Y., Chen, Y., Liang, J., Liu, J., Yang, M. 2015. Effective hydrodeoxygenation of palmitic acid to diesel-like hydrocarbons over MoO2/CNTs catalyst. Chemical Engineering Science, 135: 517–525. DOI: 10.1016/j.ces.2014.10.024.

Fang, X., Shi, Y., Wu, K., Liang, J., Wu, Y., Yang, M. 2017. Upgrading of palmitic acid over MOF catalysts in supercritical fluid of n-hexane. RSC Advances, 7(64): 40581–40590. DOI: 10.1039/c7ra07239b.

Valencia, D., Conde, R.I., García, B., Ramírez-Verduzco, L.F., Aburto, J. (2020). Development of bio-inspired supports based on Ca–SiO2 and their use in hydrodeoxygenation of palmitic acid. Renewable Energy, 148: 1034–1040. DOI: 10.1016/j.renene.2019.10.087.

Ding, R., Wu, Y., Chen, Y., Chen, H., Wang, J., Shi, Y., Yang, M. 2016. Catalytic hydrodeoxygenation of palmitic acid over a bifunctional Co-doped MoO2/CNTs catalyst: An insight into the promoting effect of cobalt. Catalysis Science and Technology, 6(7): 2065–2076. DOI: 10.1039/c5cy01575h.

Duan, Y., Ding, R., Shi, Y., Fang, X., Hu, H., Yang, M., Wu, Y. 2017. Synthesis of Renewable Diesel Range Alkanes by Hydrodeoxygenation of Palmitic Acid over 5% Ni/CNTs under Mild Conditions. Catalysts, 7(12): 81. DOI: 10.3390/catal7030081.

Smith, J.M., Van Ness, H.C., Abbott, M.M., Swihart, M.T. 2018. Introduction to Chemical Engineering Thermodynamics, 8th ed. New York, USA: McGraw-Hill Education.

Istadi, I., Amin, N.A.S. 2005. Co-generation of C2 hydrocarbons and synthesis gases from methane and carbon dioxide: A thermodynamic analysis. Journal of Natural Gas Chemistry, 14(3): 140–150.

Richardson, J.T. (1989). Principles of Catalyst Development, 1st ed. New York, USA: Springer.

Rane, N., Kersbulck, M., van Santen, R.A., Hensen, E.J.M. 2008. Cracking of n-heptane over Brønsted acid sites and Lewis acid Ga sites in ZSM-5 zeolite. Microporous and Mesoporous Materials, 110(2–3): 279–291. DOI: 10.1016/j.micromeso.2007.06.014.

Zhou, W., Xin, H., Yang, H., Du, X., Yang, R., Li, D., Hu, C. 2018. The Deoxygenation Pathways of Palmitic Acid into Hydrocarbons on Silica-Supported Ni12P5 and Ni2P Catalysts. Catalysts, 8(4): 153. DOI: 10.3390/catal8040153.

Mateus, M.M., Bordado, J.M., Galhano dos Santos, R. 2021. Estimation of higher heating value (HHV) of bio-oils from thermochemical liquefaction by linear correlation. Fuel, 302: 121149. DOI: 10.1016/j.fuel.2021.121149.

Demirbas, A. 2007. Effects of moisture and hydrogen content on the heating value of fuels. Energy Sources, Part A: Recovery, Utilization and Environmental Effects, 29(7): 649–655. DOI: 10.1080/009083190957801.







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