scholarly journals Hydrotreating of Guaiacol and Acetic Acid Blends over Ni2P/ZSM-5 Catalysts: Elucidating Molecular Interactions during Bio-Oil Upgrading

ACS Omega ◽  
2019 ◽  
Vol 4 (25) ◽  
pp. 21516-21528 ◽  
Author(s):  
Santiago Gutiérrez-Rubio ◽  
Inés Moreno ◽  
David P. Serrano ◽  
Juan M. Coronado
Keyword(s):  
Acetic Acid ◽  
Molecular Interactions ◽  
Bio Oil

scholarly journals STEAM REFORMING OF UPGRADED BIO-OIL AQUEOUS PHASE FRACTION FROM SUNFLOWER SEED HULLS: THERMODYNAMIC ANALYSIS

2019 ◽  
Vol 49 (4) ◽  
pp. 297-302
Author(s):  
Yanina P. Maidana ◽  
Eduardo Izurieta ◽  
Andres I. Casoni ◽  
Maria A. Volpe ◽  
Eduardo Lopez ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Aqueous Phase ◽  
Thermodynamic Analysis ◽  
Steam Reforming ◽  
Sunflower Seed ◽  
Maximum Yield ◽  
Energetic Efficiency ◽  
Water Addition ◽  
Thermal Requirements ◽  
Bio Oil

This work focuses on the study of hydrogen production process departing from waste lignocellulosic biomass. The bio-oil was first obtained by non-catalytic fast pyrolysis of sunflower seed hulls. Subsequently, it was upgraded to reduce the concentration of higher molecular weight compounds by water addition and mixing. A 1/1 bio-oil:water ratio was selected here. Later, a thermodynamic analysis based on free energy minimization was profited to study the steam reforming process of the upgraded bio-oil sample. The influence of the operation temperature on the reforming was analyzed. The highest hydrogen yields were obtained at ~740°C. A comparison with acetic acid used as model compound of the bio-oil is included. Results show that acetic acid is not a good approximation of a real aqueous phase of upgraded bio oil fraction. The study concludes with an analysis on the energetic efficiency, showing that its maximum is presented at lower temperatures than the maximum yield, due to the thermal requirements of preheating.

scholarly journals Experimental Study On Pyrolysis of Rice Straw Catalyzed By CaO/Al2O3-Phosphate Mixture

2021 ◽  
Author(s):  
Lianlian Xu ◽  
Zhongwen Xu ◽  
Feng Zhang ◽  
Yinmei Yuan ◽  
Bin Cheng ◽  
...  
Keyword(s):  
Experimental Study ◽  
Gas Chromatography ◽  
Acetic Acid ◽  
Rice Straw ◽  
Mass Spectrometer ◽  
Synergistic Effects ◽  
Pyrolysis Gas ◽  
Pyrolysis Gas Chromatography ◽  
Dehydration Reactions ◽  
Bio Oil

Abstract This paper studied the synergistic effects of CaO or Al2O3 and three potassium phosphates (e.g., KH2PO4, K2HPO4·3H2O and K3PO4·3H2O) in the rice stalk pyrolysis through pyrolysis-gas chromatography-mass spectrometer (Py-GC/MS) experiments. The results show that after co-catalyzed by CaO/Al2O3 and potassium phosphates, the total contents of phenols, aldehydes, acids, LG from most samples decrease and those of ketones increase compared with those catalyzed by potassium phosphates alone. CaO/Al2O3 and potassium phosphates show synergistic effects in the regulation of the types or contents of phenols, ketones, aldehydes, etc. and are suitable for the production of ketone-rich bio-oil. Dehydration reactions, etc. are further promoted under the co-catalysis of the two catalysts, and some phenols can be converted to benzene products, etc. The contents of acetic acid can decrease to 0. For 50% K3PO4.3H2O impregnated sample, the yields of furans reduce sharply after CaO addition. For most impregnated samples except 50% K2HPO4·3H2O sample and 30%, 50% K3PO4.3H2O, the contents of total furans and furfural increase after Al2O3 addition.

Reusable Amberlyst 16 catalyst for acetic acid esterification relevant for pyrolysis bio-oil upgrading process

2018 ◽  
Vol 126 (1) ◽  
pp. 181-197 ◽  
Author(s):  
Mangesh R. Avhad ◽  
Miriam V. Osborg ◽  
Jorge M. Marchetti
Keyword(s):  
Acetic Acid ◽  
Bio Oil ◽  
Acid Esterification

Effect of W incorporation on the product distribution in steam reforming of bio-oil derived acetic acid over Ni based Zr-SBA-15 catalyst

2018 ◽  
Vol 43 (7) ◽  
pp. 3629-3642 ◽  
Author(s):  
Nurbanu Cakiryilmaz ◽  
Huseyin Arbag ◽  
Nuray Oktar ◽  
Gulsen Dogu ◽  
Timur Dogu
Keyword(s):  
Acetic Acid ◽  
Steam Reforming ◽  
Product Distribution ◽  
Bio Oil

Sorbent assisted catalyst of Ni-CaO-La 2 O 3 for sorption enhanced steam reforming of bio-oil with acetic acid as the model compound

2017 ◽  
Vol 119 ◽  
pp. 106-112 ◽  
Author(s):  
Xiao-yong Zhao ◽  
Ya-ping Xue ◽  
Chang-feng Yan ◽  
Zhi-da Wang ◽  
Chang-qing Guo ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Steam Reforming ◽  
Model Compound ◽  
Bio Oil

Hydrogen Production via Sorption Enhanced Steam Reforming of Acetic Acid: A Thermodynamic Study

2013 ◽  
Vol 724-725 ◽  
pp. 769-772 ◽  
Author(s):  
Peng Fu ◽  
Wei Ming Yi ◽  
Zhi He Li ◽  
Xue Yuan Bai
Keyword(s):  
Acetic Acid ◽  
Hydrogen Production ◽  
Steam Reforming ◽  
Model Compound ◽  
Molar Ratio ◽  
Basic Requirement ◽  
Reaction Thermodynamics ◽  
Bio Oil ◽  
Favorable Temperature ◽  
Thermodynamics Of Sorption

The reaction thermodynamics of sorption enhanced steam reforming (SESR) of acetic acid as a model compound of bio-oil for hydrogen production were investigated and contrasted with acetic acid steam reforming (SR). The most favorable temperature for SR is approximately 650 °C. However, the optimum temperature for SESR is around 550 °C, which is about 100 °C lower than that for SR. The highest hydrogen concentration from SR is only 67%, which is below the basic requirement of hydrogen purity for fuel cells. In SESR, hydrogen purities are over 99% in 500-550 °C with a calcium oxide to acetic acid molar ratio (CAMR) of 4 and a water to acetic acid molar ratio (WAMR) greater than 6. The results show that hydrogen production from sorption enhanced steam reforming of acetic acid should be a promising direction.

Direct Hydrogenation of Acetic Acid in Bio-Oil with the Transition and Noble Metal-Loaded Catalysts

2013 ◽  
Vol 2 (4) ◽  
pp. 286-289
Author(s):  
Jimin Zeng ◽  
Ming Zhao ◽  
Junyu Liang ◽  
Xing Chen ◽  
Huiyan Zhang ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Noble Metal ◽  
Bio Oil ◽  
Direct Hydrogenation
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