Catalysis Today最新文献

{"title":"Impact of Co addition on the stability of Ni-based catalysts on delaminated smectite for biogas reforming","authors":"Natalia Liberato-López,&nbsp;Carolina Blanco,&nbsp;Carlos Daza","doi":"10.1016/j.cattod.2025.115312","DOIUrl":"10.1016/j.cattod.2025.115312","url":null,"abstract":"<div><div>Biogas is a renewable resource that can be converted into syngas <em>via</em> Ni-catalyzed dry reforming (DR) and serves as a precursor for e-fuel synthesis. However, the high CH₄ content in biogas accelerates Ni catalyst deactivation owing to carbon deposition. In this study, the effect of the Co addition (5 wt%) to a Ni catalyst (10 wt%) supported on delaminated mesoporous smectite for biogas DR was evaluated. Physicochemical characterization revealed that Co doping induces synergistic effects, including Ni-Co alloy formation that mitigates sintering, a decrease in metal particle size from 25.7 nm to 17.1 nm, increased basicity from 120 to 183 μmol·g_cat⁻¹, and enhanced reducibility from 90 % to 98 %. Catalytic tests were conducted at 700 °C and 25 L·g_cat⁻¹·h⁻¹ using a synthetic biogas mixture (CH₄/CO₂/N₂ = 45/35/20) without prior H₂ reduction. Co incorporation improved catalyst stability by reducing carbon accumulation, likely due to enhanced gasification. In contrast to the higher values observed for the Ni-only catalyst, the H₂/CO ratio for the Ni-Co catalyst remained in the range of 1–2. Additionally, no severe re-oxidation or sintering of the metallic phase was observed. The coke formed mainly consisted of low-crystallinity multi-walled carbon nanotubes, which were oxidized at lower temperatures for the Ni-Co catalyst. Regeneration by carbon combustion at 700 °C resulted in a maximum loss of 10 % in CH₄ conversion and 5 % in CO₂ conversion per cycle, with a 9.7 % increase in the carbon mass. These results highlight the potential of Ni-Co catalysts for stable biogas DR with improved regenerability.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"455 ","pages":"Article 115312"},"PeriodicalIF":5.2,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of the production of bio-jet fuel precursors from acetoin and 2-methylfuran via hydroxyalkylation/alkylation over sulfonic acid resin","authors":"Felipe J. Landazábal ,&nbsp;Maria Ventura ,&nbsp;Marta Paniagua ,&nbsp;Juan A. Melero ,&nbsp;Gabriel Morales","doi":"10.1016/j.cattod.2025.115290","DOIUrl":"10.1016/j.cattod.2025.115290","url":null,"abstract":"<div><div>Increasing carbon dioxide gas emissions in the aviation industry, together with the depletion of fossil fuel sources, are serious issues that require researchers to develop bio-jet fuel from sustainable renewable sources. A promising approach is the use of highly abundant and economic lignocellulosic waste biomass, from which furanic compounds can be derived. However, to obtain C₉-C₁₅ jet fuel-compatible products, C-C coupling strategies are mandatory to increase the chain length of the furanic platforms. Furthermore, there exists an uncovered potential for integrating fermentation-derived platforms, like acetoin, in advanced bio-jet fuel production routes. In this sense, this work explores the C-C coupling of acetoin, a fermentation-derived molecule, with 2-methylfuran (2-MF), a lignocellulose-derived molecule that can be obtained from selective hydrogenolysis of furfural, via hydroxyalkylation/alkylation (HAA). This solvent-free acid-catalyzed reaction yields oxygenated adducts incorporating one molecule of acetoin and 1-3 molecules of 2-MF (9–19 C atoms) that display high potential as bio-jet fuel precursors. However, side reactions are also present, coming from the auto-condensation of acetoin and/or 2-MF, yielding heavier or more oxygenated undesired compounds, so that selectivity appears as the key parameter in the catalyst performance. In this work, sulfonic acid-based resin Amberlyst-15 has displayed high activity and selectivity towards the most interesting di-condensed C₁₄ compound, herein denoted as Ac(MF)₂, which evidences the benefits of applying strong Brønsted acid sites allocated within a polymer matrix in high surface concentration. The optimization of the reaction conditions, assessed with the help of response surface methodology, led to over 77 % yield to Ac(MF)₂ with acetoin conversion around 90 %, under the optimized reaction conditions (60 °C, 2-MF/acetoin = 2.5 (mol), 6 h, catalysts loading 20 wt% referred to acetoin). Amberlyst-15 catalyst was tested in a 5-cycle reusability experiment, keeping an acceptable level of catalytic activity and selectivity despite evidence of fouling due to the formation of organic deposits. These results pave the way for a new route of bio-jet fuel production starting from already established biomass-derived platform molecules.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"455 ","pages":"Article 115290"},"PeriodicalIF":5.2,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Continuous hydrogenation of plastic wastes pyrolysis oil over used hydrotreatment catalysts","authors":"Sergio Cañete,&nbsp;Laura Faba,&nbsp;Salvador Ordóñez","doi":"10.1016/j.cattod.2025.115308","DOIUrl":"10.1016/j.cattod.2025.115308","url":null,"abstract":"<div><div>The continuous hydrogenation of refuse-derived fuel (RDF) pyrolysis oil using hydrotreating catalysts previously utilized in oil refineries is studied in this article. The hydrogenation of styrene and methyl-styrene, the primary gum precursors contributing to the low stability of the pyrolysis oil, is the main scope of the treatment. Experimental results demonstrate the catalyst's high activity at moderate temperatures, with partial hydrogenation of aromatic olefins prevailing over catalytic cracking and oligomerization. However, both undesired reactions result in coke formation, which gradually deactivates the catalyst. Deactivation studies reveal that the coke deposits on the refinery-used catalyst can even have positive effects on catalyst stability, blocking the alumina acid sites and even increasing the thermal stability of the active phase. Thermal regeneration of the catalysts also leads to active catalysts for the target reactions, but the stability of the catalyst is lower, with highest coke formation rates at low temperatures, and lower activity of the active phases at the highest studied temperatures. Results are analysed in terms of a deactivation kinetic modelling considering first-order for the main hydrogenations and second-order deactivation kinetics.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"454 ","pages":"Article 115308"},"PeriodicalIF":5.2,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sn-silica catalyzes cheese whey to lactic acid in a fluidized bed reactor","authors":"Paula Andrea Rivera-Quintero ,&nbsp;M. Olga Guerrero-Pérez ,&nbsp;Enrique Rodríguez-Castellón ,&nbsp;Gregory S. Patience","doi":"10.1016/j.cattod.2025.115286","DOIUrl":"10.1016/j.cattod.2025.115286","url":null,"abstract":"<div><div>Worldwide, the dairy industry produces 200 million tons per year of whey. Among the most abundant components of cheese whey is lactose, a low-priced raw material for nutraceuticals, animal feed, and high value products such as lactic acid (LA)., a specialty chemical platform in the pharmaceutical, cosmetic, and in the food industry, and is the precursor to polylactic acid, a biodegradable polymer. Here, we propose a fluidized bed process that atomizes an aqueous lactose solution directly into a catalytic bed operating at 325^∘C to produce LA. We synthesized silica supported Sn catalysts by varying the metal loading (from 0 to 0.1 g g⁻¹ of Sn) and analyzed its physicochemical properties. This research highlights the critical role of Sn as an active site to hydrolyse/isomerize/retro-aldol/dehydrate/crack lactose to lactic acid in a gas phase environment. All catalysts achieved complete conversion. SiO₂ impregnated with 0.1 g g⁻¹ Sn catalyst achieved the maximum lactic acid yield of 23 % at 2 h of the reaction. Lactic acid yield declined thereafter due to coke blocking the active catalytic sites. XPS, Raman and CHN analysis highlighted changes in carbon distribution and evidence of coke accumulation in the spent catalyst. This article brings new findings related to significant challenges related to the continuous operation of a fluidized bed reactor in the conversion of lactose and strategies to mitigate agglomeration and coke formation.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"454 ","pages":"Article 115286"},"PeriodicalIF":5.2,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of operating conditions on the kinetics of Iron-catalysed gasification of biocarbons with CO2","authors":"D. Chaos-Hernández,&nbsp;N. Latorre,&nbsp;P. Tarifa,&nbsp;E. Romeo,&nbsp;A. Monzón","doi":"10.1016/j.cattod.2025.115289","DOIUrl":"10.1016/j.cattod.2025.115289","url":null,"abstract":"<div><div>In this study, we investigated the catalytic gasification of cellulose-derived biocarbons (CDC) with CO₂ using Fe as the catalyst. Fe(%wt)/CDC samples were synthesized through controlled pyrolysis of cellulose impregnated with iron precursors and evaluated under varying reaction temperatures and CO₂ concentrations. Characterization by XRD, TGA, Raman, TEM, and N₂ adsorption revealed that the initial Fe loading in cellulose not only determines the final carbon content in each Fe(%wt)/CDC sample but also plays a crucial role in regulating the textural and structural properties of the resulting carbonaceous materials, as well as the Fe nanoparticle size distribution. Specifically, higher Fe loading led to a decrease in surface area, reduction of microporosity, an increase of pore diameter, and to larger average Fe nanoparticle sizes. During gasification, Fe nanoparticles were oxidized by CO₂, resulting in a decline in catalytic activity and ultimately limiting the complete gasification of the carbonaceous material by the end of the reaction. These opposing effects explain the varying behaviour observed in the Fe(%wt)/CDC samples studied. Analysis of the initial gasification rates indicated that both, the apparent reaction order with respect to CO₂ and the activation energy, increased with reaction temperature and CO₂ partial pressure (p_CO₂), respectively. These results were successfully interpreted using a Langmuir-Hinshelwood model, which accounts for the influence of CO₂ adsorption on the observed reaction rate. These findings underscore the potential of Fe(%wt)/CDC materials for CO₂ utilization and biomass valorisation, providing valuable insights for the development of efficient catalytic gasification processes.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"454 ","pages":"Article 115289"},"PeriodicalIF":5.2,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Turning waste into value: Iron-cobalt bimetallic hydrochar for efficient removal of persistent chlorinated pollutants – Mechanistic insights and adsorption models","authors":"Himadri Rajput ,&nbsp;Qian (Nancy) Lan ,&nbsp;Rahil Changotra ,&nbsp;Prachi Rajput ,&nbsp;Pooja Devi ,&nbsp;Yulin Hu ,&nbsp;Quan (Sophia) He","doi":"10.1016/j.cattod.2025.115293","DOIUrl":"10.1016/j.cattod.2025.115293","url":null,"abstract":"<div><div>In this study, a hydrothermal carbonization process was used to convert maple leaves into hydrochar, a sustainable bio-adsorbent, for the removal of pentachlorophenol (PCP) from wastewater. The hydrochar was further magnetized with iron and cobalt through hydrothermal treatment, enabling easy magnetic separation. Successful synthesis was confirmed by various physicochemical characterization techniques. Magnetic characteristics like saturation magnetization, remanence, and coercivity of synthesized hydrochar were studied to assess the functionalization. A removal efficiency of 94 % was achieved within 30 min at optimized conditions (0.06 g/L adsorbent dose, 10 mg/L initial PCP concentration, and pH 3). The adsorption process followed a pseudo-second-order kinetic model (R²= 0.995). Adsorption capacity decreased with an increasing pH from 3 to 11. At low pH values, the electrostatic interactions between PCP and adsorbent were favored by greater attractive forces. It was also observed that elevated temperature negatively impacted adsorption capacity. Reusability studies revealed a minimal reduction (16 %) in the removal efficiency over five cycles, highlighting the material’s durability. These findings demonstrated that the synthesized magnetic biosorbent effectively adsorbed PCP, and the adsorption capacity was influenced by factors like adsorbent dose, pH of reaction solution, and temperature.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"454 ","pages":"Article 115293"},"PeriodicalIF":5.2,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"B-doped GQD supported cobalt sulfide nanocomposite: A defect engineering approach for superior oxygen electrode performance","authors":"Uday Kumar Ghorui ,&nbsp;MV R.Akshay Sampath ,&nbsp;Gokul Sivaguru ,&nbsp;Rituparna Dutta ,&nbsp;Sambasivam Sangaraju ,&nbsp;Sabyasachi Chakrabortty","doi":"10.1016/j.cattod.2025.115287","DOIUrl":"10.1016/j.cattod.2025.115287","url":null,"abstract":"<div><div>Developing an efficient and durable electrocatalysts for oxygen electrolysis is crucial for advancing clean energy technologies. However, the sluggish kinetics of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), along with catalyst degradation, remain major obstacles. Here, we optimized the composition of composite nanocatalysts obtained by doping of an electron deficient, B-atoms into graphene quantum dots (GQD) attached with Cobalt Sulfide (CoS) nanostructures. Optimizing the surface structure and investigating the interfacial interactions, the catalyst demonstrated an exceptional oxygen electrode reaction performance. The faster electronic synergism between the defect engineering BGQD and CoS offers more catalytic active sites as well as faster electrical conductivity and higher adsorption/desorption rate of oxygenated intermediates at the electrode surface for the electrolysis processes. Among the optimized composite electrode material CSBGQD-13 (CoS/BGQD (1:3)) exhibited high positive onset (E_onset = 1.04 V vs. RHE) and half-wave potential (E_1/2 = 0.84 V vs. RHE) with high limiting current density of 7.6 mA/cm² at 1600 rpm and a reasonable resistance to the MeOH crossover effect during ORR. In addition, our electrocatalyst demonstrated long-term durability and effective OER activity with the lowest Tafel slope of 82 mV/dec among other CSBGQDs and a lower overpotential of 0.27 V vs. RHE at a current density of 10 mA/cm². Furthermore, the CSBGQD-13 claims excellent dual function electrocatalytic performance towards ORR and OER with a very small ΔE value (only 0.66 V vs. RHE), a higher catalytic current density. Henceforth, for possible fuel cell applications, we believe that this electrode material may provide an understanding of the principles of metal sulfide carbon dots hybrid catalysts.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"454 ","pages":"Article 115287"},"PeriodicalIF":5.2,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tailoring of single copper atoms anchored on N, P co-doped carbon for electrochemical CO2 reduction","authors":"David Ríos-Ruiz ,&nbsp;Pablo Arévalo-Cid ,&nbsp;Jesús Cebollada ,&nbsp;Verónica Celorrio ,&nbsp;María Victoria Martínez-Huerta","doi":"10.1016/j.cattod.2025.115284","DOIUrl":"10.1016/j.cattod.2025.115284","url":null,"abstract":"<div><div>The electrochemical CO₂ reduction reaction (CO₂RR) is a promising strategy to convert the greenhouse gas CO₂ into valuable products using electricity as a feedstock. This study presents the development of single-atom copper catalyst anchored on a nitrogen and phosphorus co-doped carbon matrix designed for CO₂RR. The impact of carbonization temperature on the structural properties of the electrocatalysts, such as porosity and the electronic environment, was systematically examined, revealing its influence on the selectivity towards C₁ and C₂₊ products. Increased microporosity was associated with an enhanced hydrogen evolution reaction (HER), whereas mesoporosity contributed to improved CO₂ reduction reaction activity. Aberration-corrected transmission electron microscope evidenced that P addition improved the dispersion of Cu, whether in the form of single atoms or clusters. Moreover, phosphorus doping suppressed HER and promoted the formation of products such as methane, ethylene, and ethanol. The coexistence of Cu⁺, Cu⁰, and copper single atoms was identified as key to facilitating C-C bond formation. This study emphasizes the critical balance between textural and electronic properties in optimizing catalytic performance and provides valuable insights for designing advanced electrocatalysts for CO₂ valorization.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"454 ","pages":"Article 115284"},"PeriodicalIF":5.2,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative assessment of Mo/Ti and Mo/C catalysts for phenol hydrodeoxygenation: Influence of support and hydrogen treatment","authors":"Débora G.B. Dionizio ,&nbsp;Priscilla M. de Souza ,&nbsp;Cristiane A. Henriques ,&nbsp;Gilles Berhault","doi":"10.1016/j.cattod.2025.115291","DOIUrl":"10.1016/j.cattod.2025.115291","url":null,"abstract":"<div><div>Even if catalytic hydrodeoxygenation (HDO) is a promising approach for converting bio-oil into high-value products, this reaction process still faces challenges related to the inherent high hydrogen consumption needed to perform it. Therefore, the hydrodeoxygenation (HDO) of phenol was herein studied in the gas phase using molybdenum catalysts supported on titania (Mo/Ti) and activated carbon (Mo/C) at atmospheric pressure in order to evaluate the consequences of hydrogen treatment on the catalytic properties of these Mo-based HDO catalysts. Samples were characterized by ICP-OES, XRD, XPS, Raman, TPR, H₂O-TPD, and oxygen chemisorption, and the physicochemical properties were compared with their catalytic performances. Under the studied conditions, the support type and the hydrogen treatment cause changes in active species (MoO₂ and MoO₃), promoting different catalyst behaviors. However, all the catalysts studied were 100 % selective to benzene, indicating that the molybdenum active phase did not influence the selectivity of the reaction.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"454 ","pages":"Article 115291"},"PeriodicalIF":5.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143735333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemo-enzymatic phenol polymerisation via in-situ H2O2 synthesis","authors":"Liwei Zhang ,&nbsp;Richard J. Lewis ,&nbsp;Joseph Brehm ,&nbsp;Wencong Liu ,&nbsp;David J. Morgan ,&nbsp;Thomas E. Davies ,&nbsp;Yong Wang ,&nbsp;Graham J. Hutchings","doi":"10.1016/j.cattod.2025.115292","DOIUrl":"10.1016/j.cattod.2025.115292","url":null,"abstract":"<div><div>Within this contribution, the combination of supported AuPd nanoalloys with horseradish peroxidase is demonstrated to offer high efficacy towards the one-pot oxidative polymerisation of the model wastewater contaminant phenol, via the chemo-catalytic supply of in-situ generated H₂O₂_. Notably, the utilisation of AuPd alloyed formulations offered considerably improved cascade efficiencies, compared to that observed over monometallic analogues, with the optimal 0.5%Au-0.5%Pd/TiO₂ catalyst achieving total conversion of phenol within 15 minutes when used in conjunction with the enzyme. Importantly, the in-situ chemo-enzymatic system was shown to offer good stability over successive reactions, and outperforms analogous approaches reliant on the use of preformed H₂O₂, while also avoiding the proprietary stabilising agents present in the commercial oxidant.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"454 ","pages":"Article 115292"},"PeriodicalIF":5.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143735335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}