Article
Green & Sustainable Science & Technology
Magnus Zingler Stummann, Martin Hoj, Jostein Gabrielsen, Lasse Rongaard Clausen, Peter Arendt Jensen, Anker Degn Jensen
Summary: Catalytic hydropyrolysis has shown promise as a method for producing liquid hydrocarbon fuels from lignocellulosic biomass, but there is still limited research in this field and the process remains not well-understood. Through analysis of literature and laboratory research, a mechanistic model for catalytic hydropyrolysis of biomass has been proposed, along with discussions on the influence of hydrogenation catalyst on product distribution and catalyst deactivation. Comparisons with other pyrolysis technologies have been made, highlighting and discussing the challenges for catalytic hydropyrolysis.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Engineering, Environmental
Penghui Yan, Idris Nur Azreena, Hong Peng, Hesamoddin Rabiee, Mohamed Ahmed, Yilun Weng, Zhonghua Zhu, Eric M. Kennedy, Michael Stockenhuber
Summary: Catalytic hydropyrolysis with zeolite catalysts improves the yield of liquid oil and gas products and reduces the production of biochar. The biochar produced from catalytic hydropyrolysis has a higher surface area compared to non-catalytic biochar.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Agricultural Engineering
Yuanyu Tian, Jie Li, Wei Wei, Peijie Zong, Di Zhang, Yanan Zhu, Yingyun Qiao
Summary: The study revealed that adding hydrogen in fast partial hydropyrolysis of biomass can significantly increase volatile matter generation and the yields of CH4 and light tar. Alkali and alkaline earth metals play a significant catalytic role in the reactions, while operating temperature and gas flow rate also impact product yields.
BIORESOURCE TECHNOLOGY
(2021)
Article
Energy & Fuels
Jie Li, Yuanyu Tian, Yingyun Qiao, Guozhang Chang, Cuiping Wang, Yue Gao, Laishun Yang, Ke Song, Jian Zhang, Shugang Hu, Guangxi Yue
Summary: This study focuses on the synergistic effect of a hydrogen atmosphere and biochar on tar removal and CH4-rich gas production during the pyrolysis-catalytic reforming of biomass. The use of biochar as a catalyst significantly improves the efficiency of tar conversion and the yield of methane, and it can continuously regenerate the catalyst.
Article
Chemistry, Multidisciplinary
Yingyue Teng, Xiaoting Bian, Yinmin Song, Bingzhi Wang, Na Li, Runxia He, Yunfei Wang, Quansheng Liu
Summary: This study investigated the effect of the iron component on the microcrystalline structure transformation properties of lignite during pyrolysis. The results showed that the iron component promoted the generation of CO2, CO, and H2 in the low-temperature stage and inhibited the formation of CO and H2 in the high-temperature stage. The iron component also inhibited the formation of CH4 throughout the pyrolysis process. Moreover, it restricted the spatial arrangement of aromatic rings and inhibited the formation of large aromatic rings (≥6 rings).
Article
Energy & Fuels
Jilong Shi, Lei Sun, Haibo Yan, Jie Wang
Summary: Noncatalytic hydropyrolysis of pine sawdust integrated with downstream catalytic vapor hydrotreating can effectively convert bio-oil into liquid hydrocarbons with high yields. The bimetallic 1%Ni3%Mo-HZSM-5 catalyst demonstrates superior performance in promoting hydrogenation of bio-oil to liquid hydrocarbons.
Article
Thermodynamics
Tan Li, Kai Miao, Zhigang Zhao, Yuqing Li, Huiyuan Wang, Atsushi Watanabe, Norio Teramae, Kaige Wang
Summary: The distribution of cellulose pyrolysis products under different conditions was investigated using a high-pressure micropyrolyzer. The results showed that hydrogen pressure had an effect on the duration and composition of cellulose pyrolysis products. The formation mechanisms of various compounds under hydrogen atmosphere were discussed.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Chemistry, Multidisciplinary
Stef Ghysels, Luis E. Arteaga-Perez, Adriana Estrada Leon, Tamara Menares, Simon Backx, Sven Mangelinckx, Frederik Ronsse
Summary: In this study, the fast pyrolysis of woody biomass for levoglucosan production was combined with the reductive thermocatalytic valorization of its main side streams. Through catalytic vapor-phase upgrading, high-concentration phenolics can be obtained with a large yield. This work demonstrates the value creation from overlooked side streams of the pyrolysis refinery.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Thermodynamics
Seyed Amir Hossein Seyed Mousavi, Amir Hossein Saeedi Dehaghani
Summary: Catalytic pyrolysis of municipal plastic waste can refine non-degradable plastic pollutants and produce a significant amount of liquid fuel. An upgraded catalyst and an innovative approach were used to overcome the limitation of catalyst pore size. The impact of temperature, catalyst loading, and support crystallinity on liquid fuel production efficiency was investigated using experimental design and response surface methodology.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Green & Sustainable Science & Technology
Um-e-Salma Amjad, Manzar Ishaq, Hamood Ur Rehman, Nabeel Ahmad, Lubna Sherin, Murid Hussain, Maria Mustafa
Summary: NiO deposited over ZrO(2)carrier was used as a catalyst for catalytic pyrolysis of waste polystyrene to generate fuel, with 2% and 10% loading showing the best catalytic performance. The catalytic process was found to be highly selective towards diesel-like fuel generation and depolymerization reactions, with minimal styrene monomer formation.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2021)
Article
Thermodynamics
Chokchai Suiuay, Somporn Katekaew, Kritsadang Senawong, Chaiyan Junsiri, Aphichat Srichat, Kittipong Laloon
Summary: This research focused on the technical production and necessary analysis for converting natural rubber scrap into GLF and DLF, which can be used as fuel for internal combustion engines. The study aimed to improve the oxidation stability of GLF and evaluate its performance and emission characteristics in a spark-ignition engine. The results showed that GLF had similar properties to commercial gasoline and diesel, and its engine performance was comparable to gasoline95 with minor improvements needed.
Article
Thermodynamics
Kevin Wan, Julien Manin, Hyung Sub Sim, Ioannis Karathanassis
Summary: Time-resolved formation of soot and PAHs from gasoline and diesel combustion was studied using DBI and LIF techniques. The results show that increasing temperature reduces the delay time and enhances the formation rate of both soot and PAHs. The mass-based YSI is a better predictor of sooting propensity than the mole-based YSI.
COMBUSTION AND FLAME
(2022)
Article
Engineering, Environmental
Tong Wu, Qi Dang, Yun Wu, Taoning Lei, Jingyi Yu
Summary: Catalytic hydropyrolysis is a novel technology for converting lignocellulosic biomass into alternative fuels and chemicals. This study designed and applied NiMo bimetallic carbon-based catalysts in the conversion of alkaline lignin. The process showed higher deoxygenation extent compared to pyrolysis and hydropyrolysis processes. The carbon-derived catalysts exhibited remarkable hydrodeoxygenation activity due to the synergistic effect of Ni0 and Mo2+/Moδ+.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Feiting Miao, Zhongyang Luo, Qingguo Zhou, Liwen Du, Wanchen Zhu, Kaige Wang, Jinsong Zhou
Summary: Aviation fuel production from biomass is hindered by the inefficiency of direct conversion. This research explores the utilization of a Ni-Mo/gamma-Al2O3 catalyst in the hydropyrolysis vapor upgrading process to obtain bio-oil with high selectivity for aviation fuel components. The study proposes a reaction network to explain the carbon-increasing mechanism in biomass hydropyrolysis.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Agricultural Engineering
Shinyoung Oh, Jechan Lee, Su Shiung Lam, Eilhann E. Kwon, Jeong-Myeong Ha, Daniel C. W. Tsang, Yong Sik Ok, Wei-Hsin Chen, Young-Kwon Park
Summary: Recent studies have shown that fast hydropyrolysis is a promising technology for converting biomass into liquid fuels, producing more aromatic hydrocarbons and reducing the oxygen content of bio-oil. Current research focuses on both non-catalytic and catalytic fast hydropyrolysis processes, as well as efforts to combine fast hydropyrolysis with hydrotreatment processes. Future research directions and challenges in fast hydropyrolysis are also discussed.
BIORESOURCE TECHNOLOGY
(2021)