Chinese Journal of Chemical Engineering最新文献

{"title":"A technological process for extracting vanadium from leaching solution of sodium roasting of vanadium slag by manganese salt pretreatment","authors":"Mengxia Liu ,&nbsp;Tao Jiang ,&nbsp;Jing Wen ,&nbsp;Zibi Fu ,&nbsp;Tangxia Yu ,&nbsp;Changqing Li ,&nbsp;Xinyu An","doi":"10.1016/j.cjche.2024.12.027","DOIUrl":"10.1016/j.cjche.2024.12.027","url":null,"abstract":"<div><div>The ammonium salt precipitation method is frequently utilized for extracting vanadium from the leaching solution obtained through sodium roasting of vanadium slag. However, Na⁺ and NH₄⁺ ions in the vanadium precipitation solution can not be effectively separated, leading to a large amount of ammonia-nitrogen wastewater which is difficult to treat. In this study, the manganese salt pretreatment process is used to extract vanadium from a sodium roasting leaching solution, enabling the separation of vanadium and sodium. The vanadium extraction product of manganese salt is dissolved in acid to obtain vanadium-containing leaching solution, then vanadium is extracted by hydrolysis and vanadium precipitation, and V₂O₅ is obtained after impurity removal and calcination. The results show that the rate of vanadium extraction by manganese salt is 98.23%. The vanadium extraction product by manganese salt is Mn₂V₂O₇, and its sodium content is only 0.167%. Additionally, the acid solubility of vanadium extraction products by manganese salt is 99.52%, and the vanadium precipitation rate of manganese vanadate solution is 92.34%. After the removal of manganese and calcination process, the purity of V₂O₅ product reached 97.73%, with a mere 0.64% loss of vanadium. The Mn²⁺ and NH₄⁺ ions in the solution after vanadium precipitation are separated by precipitation method, which reduces the generation of ammonia-nitrogen wastewater. This is conducive to the green and sustainable development of the vanadium industry.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 219-231"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functional evidential reasoning model (FERM) – A new systematic approach for exploring hazardous chemical operational accidents under uncertainty","authors":"Qianlin Wang ,&nbsp;Jiaqi Han ,&nbsp;Lei Cheng ,&nbsp;Feng Wang ,&nbsp;Yiming Chen ,&nbsp;Zhan Dou ,&nbsp;Bing Zhang ,&nbsp;Feng Chen ,&nbsp;Guoan Yang","doi":"10.1016/j.cjche.2024.12.021","DOIUrl":"10.1016/j.cjche.2024.12.021","url":null,"abstract":"<div><div>This paper proposed a new systematic approach – functional evidential reasoning model (FERM) for exploring hazardous chemical operational accidents under uncertainty. First, FERM was introduced to identify various causal factors and their performance changes in hazardous chemical operational accidents, along with determining the functional failure link relationships. Subsequently, FERM was employed to elucidate both qualitative and quantitative operational accident information within a unified framework, which could be regarded as the input of information fusion to obtain the fuzzy belief distribution of each cause factor. Finally, the derived risk values of the causal factors were ranked while constructing multi-level accident causation chains to unveil the weak links in system functionality and the primary roots of operational accidents. Using the specific case of the “1·15” major explosion and fire accident at Liaoning Panjin Haoye Chemical Co., Ltd., seven causal factors and their corresponding performance changes were identified. Additionally, five accident causation chains were uncovered based on the fuzzy joint distribution of the functional assessment level (FAL) and reliability distribution (RD), revealing an overall increase in risk along the accident evolution path. The research findings demonstrated that FERM enabled the effective characterization, rational quantification and accurate analysis of the inherent uncertainties in hazardous chemical operational accident risks from a systemic perspective.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 255-269"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A three-dimensional CFD numerical simulation study on pressurized oxy-fuel gasification of poultry manure in an industrial-scale gasifier","authors":"Qinwen Liu ,&nbsp;Guoqing Lian ,&nbsp;Wenli Dong ,&nbsp;Yu Su ,&nbsp;Wei Quan Leong ,&nbsp;Chi-Hwa Wang ,&nbsp;Wenqi Zhong","doi":"10.1016/j.cjche.2025.03.001","DOIUrl":"10.1016/j.cjche.2025.03.001","url":null,"abstract":"<div><div>As a renewable energy source, the thermal conversion of poultry manure, is a promising waste treatment solution that can generate circular economic outputs such as energy and reduce greenhouse gas emissions. Currently, pressurized gasification of poultry manure is still a novel research field, especially when combined with a novel technological route of oxy-fuel gasification. Oxy-fuel gasification is a newly proposed and promising gasification technology for power generation that facilitates future carbon capture and storage. In this work, based on a commercially operated industrial-scale chicken manure gasification power plant in Singapore, we presented an interesting first exploration of the coupled pressurization technology for oxy-fuel gasification of poultry manure using CFD numerical simulation, analyzed the effects of pressure and oxygen enrichment concentration as well as the coupling mechanism between them, and discussed the conversion and emission of nitrogen- and sulfur-containing pollutants. The results indicate that under oxy-fuel gasification condition (Oxy-30, <em>i.e</em>., 30%O₂/70%CO₂), as the pressure increases from 0.1 to 0.5 MPa, the CO concentration in the syngas increases slightly, the H₂ concentration increases to approximately 25%, and the CH₄ concentration (less than 1%) decreases, resulting in an increase in the calorific value of syngas from 5.2 to 5.6 MJ·m⁻³. Compared to atmospheric pressure conditions, a relatively higher oxygen-enriched concentration interval (Oxy-40 to Oxy-50) under pressurized conditions is advantageous for autothermal gasification. Pressurization increases NO precursors production and also promotes homogeneous and heterogeneous reduction of NO, and provides favorable conditions for self-desulfurization. This work offers reference for the realization of a highly efficient and low-energy-consumption thermochemical treatment of livestock manure coupled with negative carbon emission technology.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 115-127"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acid-base regulation in duodenum by intestinal fluid secretion: A simulation study","authors":"Yulan Zhao ,&nbsp;Yifan Qin ,&nbsp;Xiao Dong Chen ,&nbsp;Jie Xiao","doi":"10.1016/j.cjche.2024.12.014","DOIUrl":"10.1016/j.cjche.2024.12.014","url":null,"abstract":"<div><div>Up to now, how the secretion modes of intestinal fluid (<em>i.e.,</em> pancreaticobiliary secretion and wall secretion) can regulate intestinal acid-base environment has not been fully understood. Understanding the regulation mechanism is not only of great significance for intestinal health but may also lead to optimized designs for bio-inspired soft elastic reactors (SERs). In this work, the mixing and reaction of acidic gastric juice and alkaline intestinal fluid in a 3D duodenum with moving walls were modelled. A unique feature of this model is the implementation of both pancreaticobiliary and wall secretion of intestinal fluid as boundary conditions. This model allowed us to quantitatively explore the influence of secretion modes on pH regulation. The results demonstrated that coexistence of both pancreaticobiliary and wall secretions is the key to maintain the average pH in the duodenum at about 7.4. Their coexistence synergistically promotes the mixing and reaction of acid-base digestion liquids and provides a suitable catalytic environment for lipase in the intestine.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 76-86"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of Co-MnOx/GAC catalyst by high-gravity technology and its mechanism for synergistic catalytic ozone degradation of phenol","authors":"Cibin Wang ,&nbsp;Kangrui Nie ,&nbsp;Zhiwei Zhao ,&nbsp;Yan Xue ,&nbsp;Tong Zhao ,&nbsp;Fuming Miao ,&nbsp;Youzhi Liu ,&nbsp;Weizhou Jiao","doi":"10.1016/j.cjche.2024.12.007","DOIUrl":"10.1016/j.cjche.2024.12.007","url":null,"abstract":"<div><div>The impregnation method for preparing catalysts often faces challenges such as prolonged preparation times and poor dispersion of active components due to the limited mobility of the impregnation liquid. The rotating packed bed (RPB) can break the precursor solution into fine droplets, enabling dynamic impregnation of active components onto the surface of activated carbon. This approach facilitates the uniform distribution of active components on the carrier and enhances the stability and performance of the catalyst. In this study, activated carbon catalysts were prepared using high-gravity technology. It was found that the preparation time for Co-MnO_<em>x</em>/GAC using the RPB method was reduced by 98%, the catalytic activity increased by 6.62%, and the loadings of active components increased by 13% and 17%, the catalytic activity remained stable after five cycles, with a significantly lower rate of metal dissolution. A suite of complementary analytical techniques demonstrates that Co-MnO_<em>x</em>/GAC(RPB) has higher homogeneity and dispersion. X-ray photoelectron spectroscopy (XPS) results indicate that Co(II) and Mn(IV)/Mn(III) are the primary active sites during the catalytic decomposition of ozone, elucidating the mechanism of synergistic catalytic ozonation by dual-active components. Finally, electron paramagnetic resonance (EPR) confirmed that hydroxyl radicals (·OH) were the predominant reactive species in the reaction.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 208-218"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermodynamics insights into the gas-phase synthesis of glycolide from methyl glycolate","authors":"Dai Zhang ,&nbsp;Xiaofeng Xu ,&nbsp;Yueqiang Cao ,&nbsp;Wei Li ,&nbsp;Jinghong Zhou ,&nbsp;Xinggui Zhou","doi":"10.1016/j.cjche.2024.12.024","DOIUrl":"10.1016/j.cjche.2024.12.024","url":null,"abstract":"<div><div>Gas-phase synthesis of glycolide (GL) from methyl glycolate (MG) is of great significance for producing biodegradable polyglycolic acid. Here, we report a detailed thermodynamics study for the gas-phase synthesis of GL from MG, which involves complex reaction pathways, by utilizing the Gibbs free energy minimization method. The results indicate that the decompositions of MG and GL and the polymerization of MG are thermodynamically favorable as compared with the target pathway, <em>i.e.</em>, the cyclization of MG. Effects of the reaction conditions including temperature, pressure and feed composition on the formation of GL and linear polymers have also been addressed, which demonstrate that the higher temperature and lower pressure can effectively inhibit the formation of linear methyl ester dimer and improve the selectivity to GL. In addition, the higher N₂/MG ratio is beneficial for the formation of GL in the process promoted by catalysts. These thermodynamics results indicate that the process promoted by catalysts would benefit from the kinetics control by high-performance catalysts and the operation at high temperature, low pressure and high N₂/MG ratio to enhance the yield of targeted GL. The insights demonstrated here from thermodynamics are valuable for guiding the design of catalysts and/or optimization of reaction conditions for the gas-phase synthesis of GL from MG.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 171-181"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of hydrophobic CuCl@AC–PTFE composites with an enhanced Cu(I) stability for efficient CO adsorption","authors":"Jingru Dou,&nbsp;Yingxuan Wen,&nbsp;Fangfang Zhang,&nbsp;Falong Shan,&nbsp;Shougui Wang,&nbsp;Jipeng Dong,&nbsp;Fei Gao,&nbsp;Guanghui Chen","doi":"10.1016/j.cjche.2025.01.005","DOIUrl":"10.1016/j.cjche.2025.01.005","url":null,"abstract":"<div><div>Cu(I) based CO adsorbents are prone to oxidation and deactivation owing to the sensitivity of Cu⁺ ions to oxygen and moisture in the humid air. In this study, in order to improve its antioxidant performance, hydrophobic Cu(I) based adsorbents were fabricated using polytetrafluoroethylene (PTFE) for the hydrophobic modification, effectively avoiding the contact of CuCl active species with moisture, thereby inhibiting the oxidation of the Cu(I) based adsorbents. The successful introduction of PTFE into the activated carbon (AC) carrier significantly improves the hydrophobicity of the adsorbent. The optimal adsorbent CuCl(6)@AC–PTFE(0.10%) with the CuCl loading of 6 mmol·g⁻¹ and the PTFE mass concentration of 0.10% exhibits an excellent CO adsorption capacity of 3.61 mmol·g⁻¹ (303 K, 500 kPa) as well as high CO/CO₂ and CO/N₂ adsorption selectivities of 29 and 203 (303 K, 100 kPa). Particularly, compared with the unmodified adsorbents, the antioxidant performance of modified adsorbent CuCl(6)@AC–PTFE(0.10%) is significantly improved, holding 86% of CO adsorption performance of fresh one after 24 h of exposure to humid air with a relative humidity of 70%, making the fabricated composite a promising adsorbent for CO separation.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 23-31"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Micellization behavior and thermodynamic properties of cetyltrimethylammonium bromide in lithium chloride, potassium chloride, magnesium chloride and calcium chloride solutions","authors":"Wenting Cheng,&nbsp;Qianqian Li,&nbsp;Ying Zhai,&nbsp;Huaigang Cheng,&nbsp;Fangqin Cheng","doi":"10.1016/j.cjche.2024.12.019","DOIUrl":"10.1016/j.cjche.2024.12.019","url":null,"abstract":"<div><div>The micellization behavior and thermodynamic properties of cetyltrimethylammonium bromide (CTAB) in single lithium chloride (LiCl), potassium chloride (KCl), magnesium chloride (MgCl₂) and calcium chloride (CaCl₂) solutions were investigated at 288.15−318.15 K. Result showed that the critical micelle concentration (CMC) values of CTAB in all solutions decreased to a minimum value around 298.15 K and then increased with further increasing the temperature. In all cases, the CMC values decreased with increasing salt concentration at each temperature. Additionally, the introduction of any single salt resulted in a reduction of CMC values for CTAB, attributed to the combined effects of counterions and entropy-driven interactions. The observed trend for CMC values was as follows: <span><math><mrow><msub><mtext>CMC</mtext><mrow><msub><mi>H</mi><mn>2</mn></msub><mi>O</mi></mrow></msub></mrow></math></span> &gt; <span><math><mrow><msub><mtext>CMC</mtext><mtext>KCl</mtext></msub></mrow></math></span> &gt; <span><math><mrow><msub><mtext>CMC</mtext><mtext>LiCl</mtext></msub></mrow></math></span> &gt; <span><math><mrow><msub><mtext>CMC</mtext><msub><mtext>CaCl</mtext><mn>2</mn></msub></msub><mo>&gt;</mo><msub><mtext>CMC</mtext><msub><mtext>MgCl</mtext><mn>2</mn></msub></msub></mrow></math></span>. Furthermore, standard thermodynamic parameters, including standard free energy of micellization (<span><math><mrow><mo>Δ</mo><msubsup><mi>G</mi><mi>m</mi><mn>0</mn></msubsup></mrow></math></span>), standard enthalpy of micellization (<span><math><mrow><mo>Δ</mo><msubsup><mi>H</mi><mi>m</mi><mn>0</mn></msubsup></mrow></math></span>) and standard entropy of micellization (<span><math><mrow><mo>Δ</mo><msubsup><mi>S</mi><mi>m</mi><mn>0</mn></msubsup></mrow></math></span>), were calculated based on the obtained CMC values. The negative values of <span><math><mo>Δ</mo><msubsup><mi>G</mi><mi>m</mi><mn>0</mn></msubsup></math></span> indicated that the formation of CTAB micelles was a spontaneous behavior. The variations in <span><math><mrow><mo>Δ</mo><msubsup><mi>H</mi><mi>m</mi><mn>0</mn></msubsup></mrow></math></span> and <span><math><mrow><mo>Δ</mo><msubsup><mi>S</mi><mi>m</mi><mn>0</mn></msubsup></mrow></math></span> suggested that micellization was primarily entropy-driven at temperatures between 288.15 and 298.15 K, while it was influenced by both entropy and enthalpy from 298.15 to 318.15 K. Fourier transform infrared spectroscopy (FTIR) and transmission electron microscope (TEM) were employed to further explore the effects of salts on the micellization behavior of CTAB.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 95-104"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced activity and stability of SAPO-5 zeolite supported RuMn catalyst for aqueous-phase selective hydrodeoxygenation of guaiacol to cyclohexanol","authors":"Mengting Chen ,&nbsp;Minjie Zhu ,&nbsp;Tingyu Zhou ,&nbsp;Qifeng Zhong ,&nbsp;Meihua Zhang ,&nbsp;Yingxin Liu ,&nbsp;Zuojun Wei","doi":"10.1016/j.cjche.2025.02.012","DOIUrl":"10.1016/j.cjche.2025.02.012","url":null,"abstract":"<div><div>SAPO-5 zeolite supported RuMn was a highly efficient catalyst for the aqueous-phase selective hydrodeoxygenation of guaiacol to cyclohexanol. The optimal catalyst achieved a high cyclohexanol yield of 93.7% at full guaiacol conversion under mild conditions, with a high TOF of 920 h⁻¹. Moreover, the catalyst displayed remarkable performance for the hydrogenation of phenol to cyclohexanol, where a 100% yield of cyclohexanol was obtained at a phenol-to-Ru molar ratio of about 17900. In particular, the catalyst exhibited excellent recyclability and could be recycled for 20 times without obvious activity loss. The as-prepared RuMn/SAPO-5 catalyst exhibited higher performance than most of the reported Ru-based catalysts.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 200-207"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An experimental study into the pyrolysis characteristics of waste tire rubber with catalyst addition","authors":"Xuanyu Ji ,&nbsp;Hanyu Liu ,&nbsp;Junting Chen ,&nbsp;Xiong Zhou ,&nbsp;Jianbo Li ,&nbsp;Lu Yang ,&nbsp;Weijian Lin ,&nbsp;Ning Chen","doi":"10.1016/j.cjche.2025.02.021","DOIUrl":"10.1016/j.cjche.2025.02.021","url":null,"abstract":"<div><div>In this paper, the pyrolysis characteristics of waste tire rubber with catalyst addition were experimentally studied. Pyrolysis experimentations of waste tire rubber with either base, acid or Zeolite catalysts were performed in a Thermal Gravimetric Analyzer, a one-stage test rig and a two-stage test rig respectively. This is followed by analysis into the rates of pyrolysis reactions and the yields and distribution of the three-phase products using thermogravimetric infrared spectroscopy (TG-IR) and gas chromatography-mass spectrometry (GC-MS). Results indicated that the transition metal chloride catalysts improved the reaction rate and were overall effective than the solid acid-base catalysts. Benzene and toluene yields were improved by all three catalysts in the primary pyrolysis, and the best performance was achieved at 550 °C and 600 °C with 30% NaOH. With ZSM-5 in the secondary pyrolysis, proportion of high calorific gases components as H₂ and CH₄ were increased, and the arylation and isomerization reactions were also promoted. The optimum aromatics yield was achieved at 600 °C and 50% ZSM condition. This study would provide a reference for resourceful utilization of waste tires.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"81 ","pages":"Pages 128-141"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}