燃料化学学报 Pub Date : 2024-05-01 DOI: 10.1016/S1872-5813(23)60390-1

YANG Lisha, GUO Yanming

{"title":"Enhanced electro-catalytic activity of TNTs/SnO2-Sb electrode through the effect mechanism of TNTs architecture","authors":"YANG Lisha, GUO Yanming","doi":"10.1016/S1872-5813(23)60390-1","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60390-1","url":null,"abstract":"<div><p>The TiO<sub>2</sub> nanotubes arrays/SnO<sub>2</sub>-Sb (TNTs/SnO<sub>2</sub>-Sb) electrode is successfully fabricated using the solvothermal synthesis technique. Various architectures of TNTs are constructed by varying the anodization voltage and time, aiming to investigate their impact on the structural and electrochemical properties of the SnO<sub>2</sub>-Sb electrode. The anodization voltage is identified as the primary influencing factor on the morphology and surface hydrophilia of TNTs arrays, which is evidenced by scanning electron microscopy (SEM) and contact angle testing. In contrast, the effect of anodization time is relatively small. SEM, X-ray diffraction (XRD), linear sweep voltammograms (LSV), and electrochemical impedance spectroscopy (EIS) results indicate that the morphology and crystal size of the catalytic coating, as well as the oxygen evolution potential of the electrode, are influenced by the pore size of TNTs arrays. The influencing mechanism of enhanced electrochemical activity by adjusting the architecture of TNTs arrays is investigated using X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR), and hydroxyl radicals (·OH) generation test. The results reveal a higher concentration of oxygen vacancies on the sample with a compact and smaller particle coating, indicating the presence of more adsorbed oxygen species. Consequently, this enhances the generation capacity of active radicals for organic matter degradation. The electrode featuring TNTs arrays with a length of 950 nm and a pore diameter of 100 nm exhibits the most effective remediation of phenol-containing wastewater, achieving approximately 92% ± 4.6% removal after a duration of 2 h.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 5","pages":"Pages 687-697"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140824537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrocatalyst hydrogenation of lignol-derived compounds: Conversion regularity and product selectivity 木质素衍生化合物的电催化剂氢化：转化规律性和产品选择性

燃料化学学报 Pub Date : 2024-05-01 DOI: 10.1016/S1872-5813(23)60405-0

WEI Dening , TANG Hongbiao , YANG Gaixiu , YANG Juntao , LI Ning , CHEN Guanyi , CHEN Chunxiang , FENG Zhijie

{"title":"Electrocatalyst hydrogenation of lignol-derived compounds: Conversion regularity and product selectivity","authors":"WEI Dening , TANG Hongbiao , YANG Gaixiu , YANG Juntao , LI Ning , CHEN Guanyi , CHEN Chunxiang , FENG Zhijie","doi":"10.1016/S1872-5813(23)60405-0","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60405-0","url":null,"abstract":"<div><p>Phenolic derivatives, crucial components of bio-oil, require thorough understanding of their electrocatalytic hydrogenation (ECH) properties for efficient bio-oil utilization. This study investigated guaiacol, a representative phenolic derivative in bio-oil, focusing on its ECH mechanism, conversion, and product selectivity under varied conditions (temperature: 40–80 °C, perchloric acid concentration: 0.2–1.0 mol/L, current intensity: ((–10)–(–150) mA). Additionally, this study also explored the influence of intermediate products (2-methoxycyclohexanone and cyclohexanone) on both the conversion rate and the selectivity of the products. The experiment had revealed that guaiacol's ECH conversion rate improved with higher temperature and current intensity, whereas an increase in perchloric acid concentration negatively affected the conversion. Significantly, the presence of intermediate products, especially 2-methoxycyclohexanone, markedly enhanced the ECH conversion of guaiacol. Investigating further into the ECH mechanism of other phenolic derivatives, including phenol, pyrocatechol, guaiacol eugenol, and vanillin, as well as their combination, revealed a trend where conversion rates inversely correlated with the complexity of the functional groups on the benzene ring. Specifically, phenol, with its simpler structure, showed the highest conversion rate at 89.34%, in stark contrast to vanillin which, owing to its more complex structure, exhibited the lowest at 46.79%. In our multi-component mixture studies, it was observed that synergistic and competitive interactions significantly alter ECH conversion rates, with some mixtures showing enhanced conversion rate indicative of synergistic effects.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 5","pages":"Pages 677-686"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140824536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photo-induced in-situ synthesis of Cu2O@C nanocomposite for efficient photocatalytic evolution of hydrogen 光诱导原位合成 Cu2O@C 纳米复合材料，用于高效光催化氢气进化

燃料化学学报 Pub Date : 2024-05-01 DOI: 10.1016/S1872-5813(23)60400-1

LI Na , MAO Shuhong , YAN Wenjun , ZHANG Jing

{"title":"Photo-induced in-situ synthesis of Cu2O@C nanocomposite for efficient photocatalytic evolution of hydrogen","authors":"LI Na , MAO Shuhong , YAN Wenjun , ZHANG Jing","doi":"10.1016/S1872-5813(23)60400-1","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60400-1","url":null,"abstract":"<div><p>Cuprous oxide (Cu<sub>2</sub>O) is an ideal visible light catalyst owing to its narrow band gap, environmental benignity and abundant storage; however, the fast recombination of photogenerated charge carriers and poor stability of Cu<sub>2</sub>O has impeded its application in photocatalysis. Herein, we demonstrate that Cu<sub>2</sub>O@C nanocomposite can spontaneously evolve from a methanol aqueous solution containing cupric ions under the induction of irradiation. Compared with the traditional carbon coating method, the Cu<sub>2</sub>O@C nanocomposite obtained by the photo-induced <em>in-situ</em> synthesis can reserve superior original characteristics of the semiconductor under mild reaction conditions, promote the charge transfer and enhance the separation efficiency of charge carriers; in addition, the carbon shells can also effectively prevent Cu<sub>2</sub>O from photo-corrosion. As a result, the Cu<sub>2</sub>O@C nanocomposite exhibits excellent photocatalytic activity in the hydrogen evolution in comparison with the Cu<sub>2</sub>O particles; the H<sub>2</sub> evolution rate over the Cu<sub>2</sub>O@C nanocomposite reaches 1.28 mmol/(g·h) under visible light, compared with the value of 0.065 mmol/(g·h) over Cu<sub>2</sub>O. Moreover, the Cu<sub>2</sub>O@C nanocomposite displays good cycle stability, viz., without any deactivation in the catalytic activity after five cycles.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 5","pages":"Pages 698-706"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140824538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced photocatalysis using metal-organic framework MIL-101(Fe) for crude oil degradation in oil-polluted water 利用金属有机框架 MIL-101(Fe)增强光催化技术降解油污染水体中的原油

燃料化学学报 Pub Date : 2024-04-01 DOI: 10.1016/S1872-5813(23)60396-2

Yuning LIANG , Baohui WANG , Shuohui LI , Weimeng CHI , Mingchun BI , Yuxuan LIU , Yiran WANG , Ming YAO , Tianying ZHANG , Ying CHEN

引用次数: 0

TG-FTIR study on escape behavior of products from co-pyrolysis of coal and residuum 煤和残渣共热解产物逸出行为的 TG-FTIR 研究

燃料化学学报 Pub Date : 2024-04-01 DOI: 10.1016/S1872-5813(23)60393-7

Xiao-dong ZHOU , Hao WU , Jing-mei LIU , Xue-li HUANG , Ting LIU , Mei ZHONG , Feng-yun MA

{"title":"TG-FTIR study on escape behavior of products from co-pyrolysis of coal and residuum","authors":"Xiao-dong ZHOU , Hao WU , Jing-mei LIU , Xue-li HUANG , Ting LIU , Mei ZHONG , Feng-yun MA","doi":"10.1016/S1872-5813(23)60393-7","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60393-7","url":null,"abstract":"<div><p>Coal and residuum are first co-pyrolyzed, and then hydrogenated into small molecule products during co-liquefaction. Therefore, clarifying influence of residuum on coal pyrolysis performance is an important thermochemical basis for regulating the process. The co-pyrolysis behavior of atmospheric residuum (AR) and Naomaohu coal (NMH) were investigated by TG, TG-FTIR and distributed activation energy model. The results showed that the peak temperature of the maximum rate of weight loss for the co-pyrolysis process was reduced by 7 °C compared with the theoretical value calculated by weighted average of AR and NMH pyrolysis alone, while the weight loss increased by 3%, the average activation energy decreased by 23.6 kJ/mol. In addition, the peak area of alkyl O-containing functional groups such as alcohols and ethers increased, whereas those of CO and CO<sub>2</sub> decreased, suggesting that AR had a positive effect on NMH pyrolysis. Meanwhile, alkyl radicals from AR decomposition would combine with O-containing radicals generated from coal pyrolysis, thus resulting in a decrease of CO and CO<sub>2</sub> by inhibiting breakage of carboxyl groups. This work will provide a scientific evaluation basis for revealing the influence of residuum on composition of coal liquefaction product during co-liquefaction.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 4","pages":"Pages 525-535"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140536567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A DFT study on the formation mechanism of side product 1,2-propanediol in the hydrogenation of dimethyl oxalate over copper catalyst 铜催化剂氢化草酸二甲酯过程中副产物 1,2-丙二醇形成机理的 DFT 研究

燃料化学学报 Pub Date : 2024-04-01 DOI: 10.1016/S1872-5813(23)60399-8

Guodong LUN , Weiqi AN , Jinghong ZHOU , Yi'an ZHU , I Wei

{"title":"A DFT study on the formation mechanism of side product 1,2-propanediol in the hydrogenation of dimethyl oxalate over copper catalyst","authors":"Guodong LUN , Weiqi AN , Jinghong ZHOU , Yi'an ZHU , I Wei","doi":"10.1016/S1872-5813(23)60399-8","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60399-8","url":null,"abstract":"<div><p>The costly separation of 1,2-propanediol (1,2-PDO), an unavoidable byproduct in the hydrogenation of dimethyl oxalate (DMO), significantly hampers the economic viability of coal-to-ethylene glycol (EG) technology. To address this challenge, the formation mechanism of the side product 1,2-PDO on the Cu(111) and Cu<sub>2</sub>O(111) surfaces during DMO hydrogenation was investigated, which focused on the active sites of copper catalyst and the dominant pathway through density functional theory calculation. The thermodynamics of each elementary step and the adsorption behavior of various species involved in the reaction network along with the local density of states and charge density difference were systematically analyzed. The results indicate that 1,2-PDO is generated more favorably on the Cu<sub>2</sub>O(111) surface than that on the Cu(111) surface, owing to the Lewis acid-base pairs, i.e. Cu+ us and O– suf sites, present on the Cu<sub>2</sub>O(111) surface, which strengthens the binding of reactants, products, and reaction intermediates to the substrate. EG reacts primarily with methanol (MeOH) to form 1,2-PDO through Guerbet alcohol condensation reaction through three consecutive steps: alcohol dehydrogenation, aldol condensation, and unsaturated aldehyde hydrogenation. The O– suf sites promote the dehydrogenation of alcohols into aldehydes, the generation of enolates during aldol condensation and the hydrogenation of unsaturated aldehydes, while the Cu+ us sites are responsible for the C–C coupling reaction. These findings may shed light on the mechanism of 1,2-PDO formation over Cu catalyst and provide fundamental knowledge for the development of more efficient catalysts and process optimization.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 4","pages":"Pages 553-564"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140536561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review on the progress in the production of aromatic hydrocarbons by co-catalytic pyrolysis of biomass and plastics 生物质和塑料共催化热解生产芳香烃的进展综述

燃料化学学报 Pub Date : 2024-04-01 DOI: 10.1016/S1872-5813(23)60401-3

Dong HAN , Laizhi SUN , Lei CHEN , Shuangxia YANG , Tianjin LI , Xinping XIE , Meirong XU , Wendong TANG , Baofeng ZHAO , Hongyu SI , Dongliang HUA

{"title":"Review on the progress in the production of aromatic hydrocarbons by co-catalytic pyrolysis of biomass and plastics","authors":"Dong HAN , Laizhi SUN , Lei CHEN , Shuangxia YANG , Tianjin LI , Xinping XIE , Meirong XU , Wendong TANG , Baofeng ZHAO , Hongyu SI , Dongliang HUA","doi":"10.1016/S1872-5813(23)60401-3","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60401-3","url":null,"abstract":"<div><p>Aromatic hydrocarbons, especially monocyclic aromatic hydrocarbons such as benzene, toluene, and xylene (BTX), are important basic raw materials in the chemical industry, which are mainly derived from the catalytic reforming and thermal cracking of fossil fuels. The co-catalytic pyrolysis of biomass and plastic to produce aromatics has the advantages of high efficiency, environmental protection, low cost, and high selectivity. It can solve the problems of pyrolysis products such as high oxygen content, low aromatics yield, and low selectivity, which are caused by the characteristics of biomass rich in oxygen and poor in hydrogen. This article reviewed the research progress of co-catalytic pyrolysis of biomass and plastics to prepare aromatic compounds. Firstly, the types of raw materials for co-catalytic pyrolysis were introduced, and then the co-catalytic pyrolysis catalysts were emphasized. The reaction mechanisms of co-catalytic pyrolysis of biomass and plastics, such as the synthesis of dienes and hydrocarbon pool synergy were summarized. Finally, the future research focus and development direction of co-catalytic pyrolysis of biomass and plastics were proposed, which is developing the highly active and stable modified molecular sieve catalysts in order to improve the aromatics yield.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 4","pages":"Pages 481-495"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140536564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ni supported on Ti-doped SBA-15 catalyst for the selective hydrodeoxygenation conversion of lignin derivatives 掺钛 SBA-15 催化剂支撑的 Ni 用于木质素衍生物的选择性加氢脱氧转化

燃料化学学报 Pub Date : 2024-04-01 DOI: 10.1016/S1872-5813(23)60387-1

Hongke ZHANG, Weichen WANG, Zhiyu XIANG, Fangyuan ZHOU, Wanbin ZHU, Hongliang WANG

引用次数: 0

Dynamic behaviors and heat recovery with hot gas withdrawal of flow reversal reactor for thermal oxidation of lean methane 用于贫甲烷热氧化的反向流动反应器的动态行为和热气回收

燃料化学学报 Pub Date : 2024-04-01 DOI: 10.1016/S1872-5813(23)60398-6

Zhikai LI , Zhiwei WU , Zhangfeng QIN , Mei DONG , Weibin FAN , Jianguo WANG

{"title":"Dynamic behaviors and heat recovery with hot gas withdrawal of flow reversal reactor for thermal oxidation of lean methane","authors":"Zhikai LI , Zhiwei WU , Zhangfeng QIN , Mei DONG , Weibin FAN , Jianguo WANG","doi":"10.1016/S1872-5813(23)60398-6","DOIUrl":"https://doi.org/10.1016/S1872-5813(23)60398-6","url":null,"abstract":"<div><p>Lean methane from abandoned coal mines or drainage gas with methane concentration of 1%−3% is in general directly discharged into the atmosphere due to the lack of appropriate technology, which has caused serious environmental concerns due to its high global warming potential. While direct thermal oxidation of ultra-low methane in a flow reversal reactor offers an attractive solution, it poses challenges such as potential explosions and unstable combustion flames. Elucidating the dynamic behavior of thermal oxidation of ultra-low methane in a flow reversal reactor is the basis for practical application. To this end, autothermal operation boundary of a pilot-scale thermal flow reversal reactor was examined and the effects of hot gas withdrawal on the behavior of flow reversal reactor was deeply studied. It was found that autothermal operation can be achieved with a methane content of over 0.2% and heat can be recovered if methane content is over 0.5%. Withdrawal of hot air has a significant impact on the dynamic behavior of the reactor: maximum bed temperature at the pseudo-steady state without hot gas extraction keeps almost constant with methane concentration varying in 0.5%−3.0%; whereas for heat recovery by hot gas withdrawal, the maximum bed temperature increases with the increase of the amount of hot gas extracted, and the allowable hot gas exported from the reactor increases nearly linearly from 12.5% to 32% as the methane content increases from 0.5% to 3.0%. Furthermore, the appropriate switching time decreases with the increase of the amount of hot gas withdrawn; for most cases, reversing flow direction at a time interval of 30−50 s can ensure complete methane conversion and stable bed temperature. Thus, it may be concluded that lean methane (1%−3%) can be mitigated by thermal oxidation without worrying about the bed temperature runaway or explosion.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 4","pages":"Pages 595-606"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140536562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research progress on CO2 catalytic conversion to value-added oxygenates 二氧化碳催化转化为高附加值含氧化合物的研究进展

燃料化学学报 Pub Date : 2024-04-01 DOI: 10.1016/S1872-5813(23)60404-9

Yongheng LI, Chongchong WU, Wenbo WANG, Jing XIN, Xiaotong MI, Guoming YANG, Mengjun SU, Siran ZHANG, Hongbao LI

引用次数: 0

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