{"title":"Interfacial Engineering of Pd Nanoparticles on Fe3O4–rGO Composite Support for High-Chemoselective Nitroaromatic Hydrogenation","authors":"Zhiyuan Wang, Libo Wang, Shihao Cui, Dejian Xu, Hui Wang, Honghao Liu, Haipeng Zhang, Ning Gong, Qingshan Zhao, Mingbo Wu","doi":"10.1021/acs.iecr.5c01300","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c01300","url":null,"abstract":"Pd-based catalysts play a pivotal role in nitroaromatic hydrogenation for fine chemical synthesis, yet their intrinsic overactivity often undermines target selectivity. In this study, we develop a highly efficient and magnetically recoverable Pd/Fe<sub>3</sub>O<sub>4</sub>–rGO catalyst for nitroaromatic hydrogenation through dual-support interfacial engineering, realized by precisely anchoring Pd nanoparticles at the heterojunctions of ferrosoferric oxide and reduced graphene oxide (Fe<sub>3</sub>O<sub>4</sub>–rGO). The dual-support modulation effect not only ensures uniform Pd distribution via strong interfacial interaction but also drives directional charge transfer from Pd to the Fe<sub>3</sub>O<sub>4</sub>–rGO composite support, synergistically enhancing nitro group adsorption and optimizing H<sub>2</sub> dissociation kinetics. The prepared Pd/Fe<sub>3</sub>O<sub>4</sub>–rGO catalyst achieves exceptional catalytic performance with 99% conversion and >97% selectivity for the chemoselective hydrogenation of diverse nitroaromatics under mild conditions while maintaining remarkable activity/selectivity over multiple cycles. Notably, the integrated Fe<sub>3</sub>O<sub>4</sub> component facilitates efficient magnetic separation (<2 min), demonstrating industrial viability for continuous processes. This work provides a rational dual-support strategy that simultaneously regulates spatial configuration and electronic states of active sites to overcome the activity-selectivity trade-off in hydrogenation catalysis.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"51 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144479279","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":"Hydroxyl Free-Radical-Assisted Synthesis of the ZSM-58 Zeolite Membrane for CO2/CO Separation","authors":"Yifei Wang, Yingdong Yang, Yuxing Liu, Xinkang Zhang, Fengming Mo, Tao Huang, Yongjiang Shan, Ting Wu, Fei Zhang, Xiangshu Chen, Hidetoshi Kita","doi":"10.1021/acs.iecr.5c00003","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c00003","url":null,"abstract":"Capturing and recovering CO<sub>2</sub> from steel industry gases is essential for environmental preservation since it lowers greenhouse gas emissions and raises CO concentrations. Because of its high selectivity, energy efficiency, and continuous operation, membrane separation technology has a lot of potential for CO<sub>2</sub> separation. In the present work, a hydroxyl free radical (<sup>•</sup>OH), generated by the addition of a small amount of sodium persulfate to the precursor solution, was introduced for the first time to induce the synthesis of the ZSM-58 crystals and membranes. Hydroxyl free radicals can promote the depolymerization and condensation of silica sources during the synthesis process, thereby accelerating nucleation and crystallization. Compared with the precursor solution without sodium persulfate, the synthesis time of the membrane can be reduced by 30%, the resulting zeolite membrane exhibits a CO<sub>2</sub>/CO separation factor of 16 and a high CO<sub>2</sub> permeance of 1.5 × 10<sup>–7</sup> mol m<sup>–2</sup> s<sup>–1</sup> Pa<sup>–1</sup>. In addition, CO<sub>2</sub>/N<sub>2</sub> and CO<sub>2</sub>/CH<sub>4</sub> separation performances were also tested to evaluate the membrane quality. The separation factor of the equimolar CO<sub>2</sub>/N<sub>2</sub> and equimolar CO<sub>2</sub>/CH<sub>4</sub> mixtures reached 28.6 and 248.3 at 298 K at 0.1 MPa, accompanying the corresponding CO<sub>2</sub> permeance of 1.3 × 10<sup>–7</sup> mol m<sup>–2</sup> s<sup>–1</sup> Pa<sup>–1</sup> and 1.5 × 10<sup>–7</sup> mol m<sup>–2</sup> s<sup>–1</sup> Pa<sup>–1</sup>, respectively. This research presents an innovative and effective method for fabricating zeolite membranes.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"49 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144371063","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":"Composite Enzyme/CaCO3@Hydrogel Particles for Continuous Cascade Multienzymatic Catalysis","authors":"Qiang Cao, Caizhen Zhan, Yuchao Deng, Da-Wei Pan, Xiao-Jie Ju, Rui Xie, Zhuang Liu, Wei Wang, Liang-Yin Chu","doi":"10.1021/acs.iecr.5c01351","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c01351","url":null,"abstract":"Immobilization of multiple enzymes in particles creates opportunities to organize a complex network of biochemical reactions for continuous cascade catalysis. In this work, hydrogel particles integrated with enzyme/CaCO<sub>3</sub> nanoparticles are created via droplet-template synthesis for the continuous cascade catalysis of CO<sub>2</sub> into methanol. Three enzymes, including formate dehydrogenase (FateDH), formaldehyde dehydrogenase (FaldDH), and alcohol dehydrogenase (ADH), are separately immobilized in these CaCO<sub>3</sub> nanoparticles inside the hydrogel particles. The obtained FateDH/CaCO<sub>3</sub>@PEGDA, FaldDH/CaCO<sub>3</sub>@PEGDA, and ADH/CaCO<sub>3</sub>@PEGDA hydrogel particles enable good performance for cascade enzymatic catalysis in batch, showing a higher conversion rate than the free enzymes and the hydrogel particles coencapsulated with the three enzymes. Meanwhile, these enzyme/CaCO<sub>3</sub>@PEGDA hydrogel particles exhibit good repeatability for the cascade enzymatic catalysis, typically showing a ∼12% decrease in conversion rate after 7 cycles. Moreover, these enzyme/CaCO<sub>3</sub>@PEGDA hydrogel particles are filled in a U-shaped reactor for continuous cascade enzymatic catalysis. When three units of such reactors are sequentially used, these enzyme/CaCO<sub>3</sub>@PEGDA hydrogel particles allow efficient conversion of CO<sub>2</sub> dissolved in solution into methanol, exhibiting a maximum methanol yield at 6.00 mM. This work provides a simple, environmentally friendly, and low-cost strategy for creating multienzyme-immobilized particles for cascade enzymatic catalysis.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"17 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144371065","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}
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