Chemical Engineering Science最新文献_第4页

Low-concentration CO2 adsorption performance of MCM-41 molecular sieve doped with heterometals inherent in fly ash 掺粉煤灰异质金属的MCM-41分子筛低浓度CO2吸附性能研究

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2026-05-15 Epub Date: 2026-02-05 DOI: 10.1016/j.ces.2026.123503

Kong Haowen , Wu Hong , Zhang Li , Wang Ping , Li Ruimeng

{"title":"Low-concentration CO2 adsorption performance of MCM-41 molecular sieve doped with heterometals inherent in fly ash","authors":"Kong Haowen , Wu Hong , Zhang Li , Wang Ping , Li Ruimeng","doi":"10.1016/j.ces.2026.123503","DOIUrl":"10.1016/j.ces.2026.123503","url":null,"abstract":"<div><div>This study investigated the utilization of heterometals, such as Al, Fe, and Ti, inherent in fly ash in the synthesis of metal-doped MCM-41 molecular sieve for the efficient capture of low-concentration carbon dioxide (CO<sub>2</sub>). While active Si and Al components were extracted by an acid leaching-alkali fusion pretreatment process, the adsorbent was prepared using an <em>in situ</em> doping method, resulting in metal-doped MCM-41 with small grain sizes and ordered mesoporous channels. The distribution of metal heteroatoms was optimized by adjusting the synthesis pH. Al atoms were concentrated on the surface of the molecular sieve to form active sites, while Fe and Ti atoms were preferably incorporated into the bulk phase to regulate the pore structure. C10.5-M41, synthesized at pH 10.5, exhibited abundant surface acid-base sites and an increased pore size of 5.4 nm. In low-concentration CO<sub>2</sub> adsorption tests, the material demonstrated adsorption capacities of 1.31 mmol/g at 25 °C and 1.06 mmol/g at 90 ℃. The adsorption capacity decreased by 38% at 90℃ with 8% water vapor. In addition, 90% of the adsorption capacity at 25 ℃ could be retained after ten regeneration cycles. Based on thermodynamic analysis, physical adsorption dominates at 25 ℃, while chemical adsorption is predominant at 90 ℃. The incorporation of metal ions into the framework increases the pore size of the adsorbent and reduces its internal transport resistance for CO<sub>2</sub> gas. This study utilized heterometals inherent in fly ash as a resource and contributed to the design of high-capacity and thermally stable CO<sub>2</sub> adsorbent materials.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123503"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unique synergies of Ce and Nb doping on Cu-SSZ-13 resulting in excellent stability over a significantly wider temperature range Ce和Nb掺杂在Cu-SSZ-13上的独特协同作用使得Cu-SSZ-13在更宽的温度范围内具有优异的稳定性

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2026-05-15 Epub Date: 2026-02-05 DOI: 10.1016/j.ces.2026.123531

Jingang Wang , Jianbo Zhang , Yuzhe Mu , Xuejiao Tang

{"title":"Unique synergies of Ce and Nb doping on Cu-SSZ-13 resulting in excellent stability over a significantly wider temperature range","authors":"Jingang Wang , Jianbo Zhang , Yuzhe Mu , Xuejiao Tang","doi":"10.1016/j.ces.2026.123531","DOIUrl":"10.1016/j.ces.2026.123531","url":null,"abstract":"<div><div>Cu-SSZ-13 catalysts have emerged as the most promising on-board catalysts in denitrification with NH<sub>3</sub>-SCR due to the exceptional hydrothermal stability and catalytic activity. In the work, as-prepared Ce<sub>0.075</sub>-Nb<sub>1.5%</sub>/Cu-SSZ-13 catalyst exhibited a significantly most excellent catalytic activity with good stability in the wider temperature range of 300 ℃ to 650 ℃, due to the synergistic effect of Ce and Nb. The results of XPS and H<sub>2</sub>-TPR indicated that the interaction between Ce and Nb alters the chemical environment of the active site Cu, resulting in a more stable Cu<img>O bond, which enhances the stability of the active Cu sites, which was verified by the analysis results of Materials Studio. The addition of Nb could lead to the increase of Ce<sup>3+</sup>/Ce<sup>4+</sup> to improve the redox capacity of the catalyst. Moreover, the synergistic effect of Nb and Ce made few CuO<sub>x</sub> clusters formed and preserved a greater number of [Cu(OH)]<sup>+</sup>, which was impeded to migrate at high temperatures due to the steric hindrance formed by Nb and Ce, enhancing the catalytic activity at wider temperature range.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123531"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

D-alanine-bridged phosphotungstic acid/UiO-66 hybrids as efficient catalysts for oxidative desulfurization of fuels d -丙氨酸桥接磷钨酸/UiO-66杂化物作为燃料氧化脱硫的高效催化剂

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2026-05-15 Epub Date: 2026-02-05 DOI: 10.1016/j.ces.2026.123545

Mengying Lin , Hanyue Lou , Zhaoyang Qi , Jie Chen , Changshen Ye , Ting Qiu

{"title":"D-alanine-bridged phosphotungstic acid/UiO-66 hybrids as efficient catalysts for oxidative desulfurization of fuels","authors":"Mengying Lin , Hanyue Lou , Zhaoyang Qi , Jie Chen , Changshen Ye , Ting Qiu","doi":"10.1016/j.ces.2026.123545","DOIUrl":"10.1016/j.ces.2026.123545","url":null,"abstract":"<div><div>The development of highly active catalysts is crucial for oxidative desulfurization (ODS) to meet the growing demand for sulfur-free fuels. In this study, a defect-rich composite catalyst UiO-DAlaPW was successfully synthesized via mechanochemical grinding, wherein phosphotungstic acid (HPW) was encapsulated within a defect-engineered UiO-66 framework, utilizing D-alanine (DAla) as a bridging molecule. The synthesized catalyst, UiO-DAlaPW, significantly enhances the utilization efficiency of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>). In the model oil ODS system, the material exhibited exceptional catalytic performance: achieving deep desulfurization at room temperature within merely 5 min under conditions of extremely low acetonitrile cosolvent usage and a low oxidant/sulfur (O/S) ratio, accompanied by remarkably high H<sub>2</sub>O<sub>2</sub> utilization efficiency. Moreover, the catalyst maintained high desulfurization efficiency even in the absence of acetonitrile. Characterization by XRD, FT-IR, TGA, and XPS confirmed the successful encapsulation of HPW within the UiO-66 framework. Mechanistic studies revealed a significant synergistic effect between UiO-66 and HPW. The effective cooperation of the two active sites, namely Zr in UiO-66 and PW, significantly enhances the catalytic performance, contributing to superior oxidative desulfurization activity.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123545"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual functional Li4[Fe(CN)6] modified PVDF-HFP membrane: An effective gel polymer solid electrolyte for solid-state lithium batteries 双功能Li4[Fe(CN)6]改性PVDF-HFP膜：固态锂电池的有效凝胶聚合物固体电解质

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2026-05-15 Epub Date: 2026-02-05 DOI: 10.1016/j.ces.2026.123455

Jing Wang , Xiangbo Feng , Yuzhen Zhao , Du Lv , Hao Ma , Manni Li , Yao Liu , Guoqing Guan , Jian Miao

{"title":"Dual functional Li4[Fe(CN)6] modified PVDF-HFP membrane: An effective gel polymer solid electrolyte for solid-state lithium batteries","authors":"Jing Wang , Xiangbo Feng , Yuzhen Zhao , Du Lv , Hao Ma , Manni Li , Yao Liu , Guoqing Guan , Jian Miao","doi":"10.1016/j.ces.2026.123455","DOIUrl":"10.1016/j.ces.2026.123455","url":null,"abstract":"<div><div>Solid electrolyte is an effective way to address the safety concerns associated with liquid electrolytes based-rechargeable Li-ion batteries (LIBs), making the improvement of their electrochemical performance particularly significant. In this work, a poly(vinylidene fluoride-hexafluoro propylene) (PVDF-HFP) membrane was successfully modified with lithium hexacyanoferrate(II) (Li<sub>4</sub>[Fe(CN)<sub>6</sub>]), the resulting bonding interactions enabled the formation of a gel polymer electrolyte (GPE) with high ionic conductivity, making it highly suitable for applications in SSLBs applications. Impressively, the obtained GPE with a three-dimensional (3D) porous network exhibited a wide electrochemical window of ∼5.0 V, a high lithium transference number of 0.42, and an enhanced ionic conductivity of 2.63 × 10<sup>-4</sup> S·cm<sup>−1</sup>. These improvements can be attributed to the dual functional Li<sub>4</sub>[Fe(CN)<sub>6</sub>], which not only serves as a lithium ion source but also effectively reduces the crystallization of PVDF-HFP. Additionally, the assembled SSLB with this GPE exhibited excellent cycling stability, achieving a high initial capacity of 119.1 mAh·g<sup>−1</sup> and a high initial Coulombic efficiency of 97.24% at 1C. This PVDF-HFP-Li<sub>4</sub>[Fe(CN)<sub>6</sub>] GPE is therefore expected to be an effective electrolyte for next-generation SSLBs with high cycling stability.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123455"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unraveling the molecular mechanism of solid–liquid phase equilibrium of DBD in different solvents 揭示了DBD在不同溶剂中固液平衡的分子机理

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2026-05-15 Epub Date: 2026-01-31 DOI: 10.1016/j.ces.2026.123486

Ruijun Wang , Zhen Dong , Hui Wang , Yongbin Zou , Huaqi Zhang , Xue Hao , Yuan Gao , Zhiwen Ye , Hongxun Hao

{"title":"Unraveling the molecular mechanism of solid–liquid phase equilibrium of DBD in different solvents","authors":"Ruijun Wang , Zhen Dong , Hui Wang , Yongbin Zou , Huaqi Zhang , Xue Hao , Yuan Gao , Zhiwen Ye , Hongxun Hao","doi":"10.1016/j.ces.2026.123486","DOIUrl":"10.1016/j.ces.2026.123486","url":null,"abstract":"<div><div>1,2-Di(1′H-[1,5′-bitetrazol]-5-yl)diazene (DBD) is considered a promising high-energy, nitrogen-rich material. However, its practical utilization is limited by low solubility and insufficient understanding of its thermodynamic behavior. To address this, the solid–liquid equilibrium of DBD was examined in four pure solvents (water, acetonitrile, acetone, and 1,4-dioxane) and three binary solvent systems (with water as the anti-solvent) from 278.15 to 318.15 K using gravimetric method. The van’t Hoff, modified Apelblat, Yaws, GCM, and Jouyban-Acree models all yielded excellent correlations with the experimentally determined solubility data of DBD, among which the modified Apelblat model stood out with superior performance. A multi-technique approach was employed to unravel the molecular mechanisms. Hirshfeld surface analysis identified the preferential spatial contacts within the crystal structure, while molecular electrostatic potential (ESP) analysis exhibited the surface charge characteristics relevant to solute–solvent interactions. Combined DFT/IGMH/AIM analysis elucidated the dissolution mechanism: water solvent effectively disrupts solute–solute binding but demands high reorganization energy. Mixed solvents, on the other hand, optimize this energy balance, thereby creating a superior solubilizing environment. Molecular dynamics simulations revealed that the maximum solubility of DBD in binary water-organic solvent systems occurs at specific mixing ratios. This maximum is directly linked to the peak in solute–solvent interaction energy, as evidenced by its primary dependence on optimized hydrogen bonding and van der Waals interactions. This finding establishes a coherent framework linking macroscopic thermodynamics to microscopic molecular interactions, thereby affording fundamental insights for the practical optimization of DBD.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123486"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146095538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance of Fe2O3/graphene hybrid nanofluids within an alternating oval tube: experimental investigation of the effects of pitch angle 交替椭圆管中Fe2O3/石墨烯混合纳米流体的性能：俯仰角影响的实验研究

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2026-05-15 Epub Date: 2026-02-08 DOI: 10.1016/j.ces.2026.123537

Sasidhar Gurugubelli , Singuru Madhavarao , Yarrapragada K.S.S. Rao , Rapaka Jagadeesh , Ravikiran Balaga , Javed Syed

{"title":"Performance of Fe2O3/graphene hybrid nanofluids within an alternating oval tube: experimental investigation of the effects of pitch angle","authors":"Sasidhar Gurugubelli , Singuru Madhavarao , Yarrapragada K.S.S. Rao , Rapaka Jagadeesh , Ravikiran Balaga , Javed Syed","doi":"10.1016/j.ces.2026.123537","DOIUrl":"10.1016/j.ces.2026.123537","url":null,"abstract":"<div><div>The effect of pitch angle on the design of an alternative oval tube heat exchanger is evaluated using Fe<sub>2</sub>O<sub>3</sub>/graphene hybrid nanofluid. The hybrid nanofluids were successfully synthesized, achieving optimal thermal conductivity at a 3:2 wt ratio. Experiments were conducted with different pitch angles (30°, 45°, 60°, and 90°) and nanoparticle concentrations ranging from 0.01% to 0.03%. The Nusselt number increased with the Reynolds number, by 12 to 20% at a 30° pitch compared to a 90° pitch, suggesting better heat transfer at lower pitch angles. Conversely, the friction factor and pressure drop exhibited a decrease with the Reynolds number, yet remained 8 to 15% elevated. It is observed that the highest concentration (0.03%) results in a 12% improvement in the heat transfer coefficient over 0.01%. Performance index ratios (PIR) decrease by approximately 25% as Reynolds numbers rise from 250 to 2000, with a 30° angle yielding a 12% higher PIR than 90°. The study suggests that a 30° pitch with a nanoparticle concentration of 0.02–0.03% at moderate Reynolds numbers (1000–1500) optimises heat transfer. Furthermore, a balanced design, favoring a 45° pitch angle and moderate nanofluid concentration, optimizes thermal performance while minimizing frictional losses, providing essential guidelines for effective industrial heat exchanger design.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123537"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146138480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pd/SSZ-39 low-temperature hydrocarbon traps: probing adsorption mechanisms and hydrothermal aging impacts Pd/SSZ-39低温油气圈闭：探测吸附机理及热液老化影响

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2026-05-15 Epub Date: 2026-02-05 DOI: 10.1016/j.ces.2026.123547

Jinhuang Cai , Chaofan Qi , Dingding Liu , Guohua Jing , Yongdan Li , Huawang Zhao

{"title":"Pd/SSZ-39 low-temperature hydrocarbon traps: probing adsorption mechanisms and hydrothermal aging impacts","authors":"Jinhuang Cai , Chaofan Qi , Dingding Liu , Guohua Jing , Yongdan Li , Huawang Zhao","doi":"10.1016/j.ces.2026.123547","DOIUrl":"10.1016/j.ces.2026.123547","url":null,"abstract":"<div><div>Hydrocarbons (HCs) emission during the cold-start period of internal combustion engine vehicles accounts for the majority of total HCs emission. In this work, we developed a Pd/SSZ-39 catalyst with exceptional low-temperature C<sub>3</sub>H<sub>6</sub> (representative of light HCs) trapping performance, achieving the C<sub>3</sub>H<sub>6</sub> storage capacity of 0.87 mmol/g (C<sub>3</sub>H<sub>6</sub>/Pd<sup>2+</sup>=12). The C<sub>3</sub>H<sub>6</sub> adsorption tests revealed that aged Pd/SSZ-39 samples retained 47% and 28% of its original C<sub>3</sub>H<sub>6</sub> trapping capacity after treatment at 800 °C and 900 °C for 20 h, respectively, while its C<sub>3</sub>H<sub>6</sub> oxidation efficiency remained largely unaffected. Characterization studies indicate that Pd<sup>2+</sup> ions serve as primary adsorption sites, initially capturing C<sub>3</sub>H<sub>6</sub> molecules as Pd<sup>2+</sup>(C<sub>3</sub>H<sub>6</sub>)<sub>x</sub>, which then undergo cracking and polymerization at neighboring Brønsted acid sites. The reduction in both Pd<sup>2+</sup> ions and Brønsted acid sites directly correlates with the diminished C<sub>3</sub>H<sub>6</sub> adsorption capacity. During the desorption phase, Pd<sup>2+</sup>(C<sub>3</sub>H<sub>6</sub>)<sub>x</sub> species decompose between 200–300 °C, while polymerized hydrocarbons undergo oxidation at 300–400 °C, yielding distinct C<sub>3</sub>H<sub>6</sub> and CO<sub>2</sub>/CO release peaks. These findings highlight the Pd/SSZ-39 as a robust low-temperature hydrocarbon trap, even under extreme hydrothermal aging conditions.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123547"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146121907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A passive and stable aerogel reactor based on Ag-loading cellulose Pickering emulsion 基于载银纤维素皮克林乳液的被动稳定气凝胶反应器

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2026-05-15 Epub Date: 2026-02-06 DOI: 10.1016/j.ces.2026.123520

Jian Liu , Jianyi Song , Na Liu , Qiao Lan

{"title":"A passive and stable aerogel reactor based on Ag-loading cellulose Pickering emulsion","authors":"Jian Liu , Jianyi Song , Na Liu , Qiao Lan","doi":"10.1016/j.ces.2026.123520","DOIUrl":"10.1016/j.ces.2026.123520","url":null,"abstract":"<div><div>A pump-free, stable and efficient aerogel reactor with abundant pores is designed using Ag-loading cellulose Pickering emulsions as a template for the continuous flow catalytic reduction of 4-nitrophenol. The fabrication of the aerogel reactor entails the two-step oxidation synthesis of aldehyde-functionalized cellulose nanocrystals (ACNC), the in-situ reduction of Ag nanoparticles (NPs) on them to form Ag@ACNC, the utilization of this material to stabilize a Pickering emulsion for preparing the hydrogel, and finally the freeze-drying of the hydrogel laying on a fabric strip. The emulsion-templated aerogel features abundant pores with loading Ag NPs on inner walls, enabling reactant to flow through the pores rapidly under driving by its gravity and the capillary action of the supporting fabric strip and react on the walls. The aerogel reactor achieves efficient three-dimensional flow catalysis without an external power source and exhibits excellent conversion and stability. The conversion all remains above 91.8% during the continuous flow catalysis reaction of 6 cycles (totaling 72 h), and the conversion still reaches 94.4% at 12 h after storage in air for 60 days. This emulsion-templated aerogel reactor demonstrates great potential for advancing recyclable catalytic systems, thereby paving the way for its wide applications.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123520"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electro-initiated co-precipitation for synthesis of copper-based powder catalysts 电共沉淀法合成铜基粉末催化剂

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2026-05-15 Epub Date: 2026-02-06 DOI: 10.1016/j.ces.2026.123549

Haoyuan Gu , Shengbin Dong , Pengfei Tian , Jiancheng Guo , Fu-Zhen Xuan , Minghui Zhu

{"title":"Electro-initiated co-precipitation for synthesis of copper-based powder catalysts","authors":"Haoyuan Gu , Shengbin Dong , Pengfei Tian , Jiancheng Guo , Fu-Zhen Xuan , Minghui Zhu","doi":"10.1016/j.ces.2026.123549","DOIUrl":"10.1016/j.ces.2026.123549","url":null,"abstract":"<div><div>Copper-based catalysts are extensively utilized in heterogeneous catalysis due to their cost-effectiveness and superior activity. However, their industrial production predominantly relies on conventional precipitation or impregnation methods, which inevitably generate substantial liquid and gaseous waste. Furthermore, these routes typically depend on nitrate precursors, where the production involves dissolving metals in strong acids, creating significant upstream environmental burdens. To address these issues, this work presents a facile and environmentally friendly electrochemical synthesis strategy. In this approach, a Cu mesh acts as the in-situ Cu<sup>2+</sup> source, while OH<sup>–</sup> generated from the hydrogen evolution reaction serves as the precipitating agent. Furthermore, by adding sodium citrate to the electrolyte, we can control the morphology of the catalyst, and by replacing the metal cations in the nitrate electrolyte, we can control the composition of the catalyst. Notably, a copper-cerium mixed oxide synthesized with 0.1 M cerium nitrate and 0.01 M sodium citrate delivers exceptional performance in CO oxidation, achieving a T<sub>60</sub> of 78 ℃ and a T<sub>90</sub> of 92 ℃. This enhanced activity is attributed to a unique dispersed nanosheet morphology that promotes the formation of Cu-Ce solid solutions and oxygen vacancies. Consequently, this green synthesis protocol holds great promise for sustainable industrial catalyst manufacturing.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123549"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

One-step nanoprecipitation of polymeric nanoparticles with tunable size, uniformity, shape and surface function 一步法制备具有可调尺寸、均匀性、形状和表面功能的聚合物纳米颗粒

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2026-05-15 Epub Date: 2026-02-06 DOI: 10.1016/j.ces.2026.123557

Dongpeng Sun , Jingyi Chen , Canghai Luo , Yuan Zheng , Xinxiong Wang , Baoling Guo , David A. Weitz , Dong Chen

引用次数: 0