Catalysis Surveys from Asia最新文献

{"title":"Poisoning Effects of Chlorine on V2O5–WO3/TiO2 Catalysts for Selective Catalytic Reduction of NOx by NH3","authors":"Jie Yu,&nbsp;Lei Qiu,&nbsp;Yimeng Yin,&nbsp;Xing Li,&nbsp;Haohui Chen,&nbsp;Chizhong Wang,&nbsp;Huazhen Chang","doi":"10.1007/s10563-022-09386-4","DOIUrl":"10.1007/s10563-022-09386-4","url":null,"abstract":"<div><p>Chlorine species, widely presented in industrial flue gas such as the waste incineration plants, can poison the catalysts and affect the selective catalytic reduction (SCR) performance. In this work, effects of Cl on the SCR performance of V₂O₅–WO₃/TiO₂ (VW/Ti) catalysts were investigated by NH₄Cl deposition. The results showed that the NO_<i>x</i> conversion efficiency at low reaction temperature (&lt; 300 °C) decreased with the loading of NH₄Cl after calcination. It was found that instead of causing the chlorination of VW/Ti catalyst the NH₄Cl decomposed into volatile Cl species due to the weak V–Cl bonding. Such decomposition reduced significantly the surface non-lattice oxygen species to inhibit NO adsorption and activation, but hardly affected the redox ability and acidity of VW/Ti catalyst. Time–resolved in situ DRIFTs results indicated that NH₃ activation and the SCR process predominated by Eley–Rideal mechanism were not influenced with NH₄Cl impregnation, while the SCR at low temperature following a Langmuir–Hinshelwood path was limited by the decreased and weaker binding sites for NO activation.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"27 2","pages":"147 - 154"},"PeriodicalIF":3.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4650245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication and Reinforcement of Macro- and Mesoporous Bimodal Materials from Mesoporous Silica-Alumina Spheres and Their Applications to Acid Catalysts and Adsorbents","authors":"Masaki Okamoto,&nbsp;Yuki Takahashi,&nbsp;Yusuke Takanaka","doi":"10.1007/s10563-022-09385-5","DOIUrl":"10.1007/s10563-022-09385-5","url":null,"abstract":"<div><p>Mesoporous silica-alumina spheres were used to create macro- and mesoporous bimodal silica-aluminas. Before removing the surfactant template for mesopores, the silica-alumina spheres were neatly stacked by sedimentation, and the contact points between the spheres were reinforced by silica. The bimodal silica-alumina was used as an acid catalyst for transesterification of triglyceride with methanol. The bimodal catalyst was readily separated from the reaction mixture. It showed the same catalytic activity as the non-sedimented spheres and higher activity than the catalyst prepared by pelletizing the silica-alumina spheres with colloidal silica binders. The bimodal materials were utilized as an adsorbent with an indicator of adsorption amount since the color changed with the amount of toluene that was adsorbed on them.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"27 1","pages":"39 - 47"},"PeriodicalIF":3.0,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4201576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Challenges and Comprehensive Evolution of Cu-Based Zeolite Catalysts for SCR Systems in Diesel Vehicles: A Review","authors":"Xiaotong Qi,&nbsp;Yanhua Wang,&nbsp;Caixia Liu,&nbsp;Qingling Liu","doi":"10.1007/s10563-022-09384-6","DOIUrl":"10.1007/s10563-022-09384-6","url":null,"abstract":"<div><p>Nitrogen oxides (NO_x) are major contaminant causing environmental pollution in atmosphere. The most effective method for NO_x removal is ammonia selective catalytic reduction (NH₃-SCR), and catalysts play a crucial role. Cu-based zeolite catalysts are commonly used for the removal of NO_x from diesel engine exhaust, but the complex composition of diesel exhaust and the harsh operating environment of catalysts make zeolite catalysts susceptible to deactivation, thus limiting their practical application. This manuscript focuses on the negative effects of actual working conditions associated with diesel vehicle exhausts and analyses the influence of composition structure that Cu-based zeolite catalysts have on NH₃-SCR reaction, which refers mainly to the effects brought by topology, Si/Al ratio and Cu species. The strategies for developing Cu-based zeolite catalysts are summarized, and the current development bottlenecks such as improving catalytic performance, reducing synthesis cost and enhancing production efficiency are discussed, and the future research directions of Cu-based zeolite are prospected.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"27 3","pages":"181 - 206"},"PeriodicalIF":3.0,"publicationDate":"2022-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4073365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Metal-Based Catalysts for Selective Hydrogenation of Anthraquinone to Produce Hydrogen Peroxide","authors":"Chenglin Miao,&nbsp;Rongxin Zhang,&nbsp;Tianli Hui,&nbsp;Gaoshan Zang,&nbsp;Jieguang Wang","doi":"10.1007/s10563-022-09382-8","DOIUrl":"10.1007/s10563-022-09382-8","url":null,"abstract":"<div><p>Selective hydrogenation of anthraquinone is critical in producing H₂O₂, the strong oxidant widely used in most industrial areas. More efforts were made on the selective hydrogenation of C=O in the anthraquinone process because the sides-product will negatively affect continuous H₂O₂ production and significantly reduce the project economics. A crucial step toward high H₂O₂ yield is the rational design of heterogeneous catalysts. In this review, the metal-based catalyst design for the selective anthraquinone hydrogenation is cataloged into two significant strategies: active metal regulation and support property regulation. Research accomplished in the past decade on the catalyst design for selective anthraquinone hydrogenation is systematically reviewed. The focus is on the catalytic performance-enhancing mechanism and the factors that influence the mechanism. In addition, the limitations and barriers encountered for supported catalysts in the current study, as well as potential research trends, are discussed.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"27 2","pages":"115 - 131"},"PeriodicalIF":3.0,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4472786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cobalt Catalysts Derived from Layered Double Hydroxide/g-C3N4 Composite in the Hydrogenation of γ-Valerolactone into 1,4-Pentanediol","authors":"Yu-Chuan Lin,&nbsp;Chou-Hsun Hsieh","doi":"10.1007/s10563-022-09383-7","DOIUrl":"10.1007/s10563-022-09383-7","url":null,"abstract":"<div><p>Co-based catalysts were derived from CoAl-layered double hydroxide (LDH), LDH/melamine, LDH/activated carbon, and LDH/g-C₃N₄. The use of these catalysts for the hydrogenation of γ-valerolactone into 1,4-pentanediol was investigated. The catalyst derived from CoAl-LDH/g-C₃N₄ contained higher concentrations of strong Brønsted acid, Lewis acid (Co^δ+, δ &gt; 2), and Lewis base (N with a lone pair of electrons) sites, resulting in improved turnover frequency.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"27 1","pages":"20 - 28"},"PeriodicalIF":3.0,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10563-022-09383-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4474362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tafel Slope Analysis from Inherent Rate Constants for Oxygen Reduction Reaction Over N-doped Carbon and Fe–N-doped Carbon Electrocatalysts","authors":"Yun Wu,&nbsp;Azhagumuthu Muthukrishnan,&nbsp;Shinsuke Nagata,&nbsp;Yuta Nabae","doi":"10.1007/s10563-022-09381-9","DOIUrl":"10.1007/s10563-022-09381-9","url":null,"abstract":"<div><p>Nitrogen-doped carbon with and without Fe additives is a promising alternative for commercial Pt/C catalysts for the oxygen reduction reaction (ORR) in proton and anion exchange membrane fuel cells. To understand the nature of the rate-determining steps (RDSs) of the ORR over newly developed catalysts, the analysis of the Tafel slopes of ORR voltammograms is beneficial for elucidating the number of electrons involved in the RDS. Conventionally, the Tafel slope is evaluated from the measured total current, which involves several different reaction pathways: the four-electron pathway from O₂ to H₂O described with a kinetic constant <i>k</i>₁, the two-electron pathway from O₂ to H₂O₂ with <i>k</i>₂, and the two-electron pathway from H₂O₂ to H₂O with <i>k</i>₃. This method provides reasonable Tafel slopes as long as the measured ORR is selective to a particular reaction pathway, such as the four-electron pathway over a Pt/C catalyst; however, typical Fe/N/C and N/C catalysts have mixed reaction pathways and analyzing the Tafel slopes from the total current does not provide meaningful information. To address this, we propose a new methodology for analyzing Tafel slopes. In this study, the measured ORR currents were converted into inherent kinetic constants (<i>k</i>₁⁰, <i>k</i>₂⁰, and <i>k</i>₃⁰) using the Nabae model, which was previously developed by our group, and the Tafel plots for <i>k</i>₁⁰, <i>k</i>₂⁰, and <i>k</i>₃⁰ were analyzed to determine the Tafel slopes of each reaction pathway. Four ORR systems (Fe/N/C and N/C catalysts in acid and base) were analyzed using the proposed method, and the differences in the reaction mechanisms were successfully reflected in the determined parameters.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"27 1","pages":"84 - 94"},"PeriodicalIF":3.0,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10563-022-09381-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4319523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of SBA-15@3,4,5-tri Hydroxyphenyl Acetic@ Tb for the Facile Synthesis of 5-Substituted 1 H-tetrazoles","authors":"Mohammad Ghadermazi,&nbsp;Somayeh Molaei","doi":"10.1007/s10563-022-09375-7","DOIUrl":"10.1007/s10563-022-09375-7","url":null,"abstract":"<div><p>New organic-inorganic mesoporous hybrid materials containing terbium complexes covalently attached to mesoporous silica SBA-15 have been successfully prepared. The mesoporous silica SBA-15 was modified with 3,4,5-tri hydroxyphenyl acetic acid ligand and then used to fabricate the lanthanide-based mesoporous material SBA-15@3,4,5-tri hydroxyphenyl acetic@ Tb. The mesoporous material was characterized by Fourier transforms infrared (FTIR) spectra, powder X-ray diffraction (XRD), and scanning electron microscopy (SEM). The results show that the 3,4,5-tri hydroxyphenyl acetic acid ligand and Tb ions are attached to the SBA-15 host. The catalysts were tested in the synthesis of 5-substituted 1<i>H</i>-tetrazoles. This catalyst is an efficient catalyst for [3 + 2] cycloaddition with NaN₃ to prepare 5-substituted 1<i>H</i>-tetrazoles. The catalyst was recycled for up to six cycles without significant loss of activity.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"27 2","pages":"139 - 146"},"PeriodicalIF":3.0,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10563-022-09375-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4319824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of Silicalite-1-Encapsulated Ni Catalyst from Ni Phyllosilicate for Dry Reforming of Methane","authors":"Yusheng Zhang,&nbsp;Ryota Takahashi,&nbsp;Kentaro Kimura,&nbsp;Hiroyasu Fujitsuka,&nbsp;Teruoki Tago","doi":"10.1007/s10563-022-09379-3","DOIUrl":"10.1007/s10563-022-09379-3","url":null,"abstract":"<div><p>CO₂ (dry) reforming of methane (DRM) is a significant and useful reaction from the standpoint of effective utilization and conversion of two main greenhouse gases to value-added synthesis gas. To achieve highly efficient and stable DRM reaction, a Silicalite-1-encapsulated ultrafine Ni nanoparticle catalyst (Ni@S-1)by using Ni phyllosilicate (Ni-PS) as precursor was newly developed. This Ni@S-1 catalyst exhibited negligible coke deposition (0.5 wt.%) evaluated at 600 °C for 5 h. Additionally, this Ni@S-1 catalyst presented high and stable catalytic performances and maintained the Ni nanoparticles with ultrafine size (&lt; 7 nm) at 850 °C for 24 h. Therefore, this Ni@S-1 catalyst showed good suppression of coke formation and high resistance to nickel sintering and thus was promising for DRM reaction.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"27 1","pages":"56 - 66"},"PeriodicalIF":3.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4225086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Formation of Ir–MgO Solid Solutions Analyzed with X-ray Absorption Spectroscopy","authors":"Kazu Okumura,&nbsp;Hitomi Hoshi,&nbsp;Hikaru Iiyoshi","doi":"10.1007/s10563-022-09378-4","DOIUrl":"10.1007/s10563-022-09378-4","url":null,"abstract":"<div><p>Thermal treatment of MgO-loaded Ir nanoparticles or Ir(OAc)₃ formed Ir–MgO solid solutions. The valence of Ir in the Ir–MgO solid solution was 3 +, as evidenced by Ir L₃-edge XANES combined with XPS analysis. A slight contraction of the Ir–O bond distance was observed compared to that of the nearest neighboring Mg–O bond in MgO. Ir–MgO dispersion exhibited a two-spike pattern depending on the treatment temperature owing to the formation and successive segregation of the solid solutions.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"27 1","pages":"95 - 106"},"PeriodicalIF":3.0,"publicationDate":"2022-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10563-022-09378-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4139648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selective Xylose Hydrogenation to Xylitol with Cu@C Prepared from Ion Exchange Resin Under Relatively low Hydrogen Pressure","authors":"Hiroyasu Fujitsuka,&nbsp;Ryokuto Kanomata,&nbsp;Yuki Yamaguchi,&nbsp;Motoaki Kawase,&nbsp;Teruoki Tago","doi":"10.1007/s10563-022-09377-5","DOIUrl":"10.1007/s10563-022-09377-5","url":null,"abstract":"<div><p>Hydrogenation of xylose to xylitol with carbon-supported Cu catalyst (Cu@C) at a hydrogen pressure value below 1.1 MPa was performed. The Cu@C catalyst exhibited high xylitol selectivity and catalyst stability because of the inertness of the carbon support and the embedded structure of the small Cu particles in the carbon.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"27 1","pages":"29 - 38"},"PeriodicalIF":3.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4100890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}