Feng Rong , Yisong Xue , Wenhao Tang , Qifang Lu , Mingzhi Wei , Enyan Guo , Yingping Pang
{"title":"Visible-light-active 1D Ag-CoWO4/CdWO4 plasmonic photocatalysts boosting levofloxacin conversion","authors":"Feng Rong , Yisong Xue , Wenhao Tang , Qifang Lu , Mingzhi Wei , Enyan Guo , Yingping Pang","doi":"10.1016/j.jtice.2022.104267","DOIUrl":"https://doi.org/10.1016/j.jtice.2022.104267","url":null,"abstract":"<div><p>The photocatalysis stride is highly dependent on the design and construction of photocatalysts, marking high activity, and long-term stability. A novel photocatalyst of plasmonic Ag decorated CoWO<sub>4</sub>/CdWO<sub>4</sub> (Ag-CoWO<sub>4</sub>/CdWO<sub>4</sub>) tube-like Z-scheme heterojunction was firstly constructed via two-step electrospinning and <em>in-situ</em> deposition approach. Benefiting from the synergistic effects of Z-scheme heterojunctions, 1D tubular structure, and the localized surface plasmon resonance (LSPR) effect of Ag nanoparticles, the Ag-CoWO<sub>4</sub>/CdWO<sub>4</sub> heterostructured photocatalysts showed strong visible-light absorption, high charge separation, and a photocatalytic activity enhancement in levofloxacin (LVF) photocatalysis. Experimental results reveal that <strong>·</strong>OH, h<sup>+</sup> and <strong>·</strong>O<sub>2</sub><sup>−</sup> act as reactive species, promoting and accelerating LVF oxidation. Our work gives the idea of introducing a dedicated composite photocatalyst, conquering individual materials’ intrinsic limits, for wastewater in practical applications.</p></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"133 ","pages":"Article 104267"},"PeriodicalIF":5.7,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"1739834","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}
Ying Zhang , Yingguan Xiao , Xiang Liu , Zhengliang Yin , Shunsheng Cao
{"title":"Silver/carbon co-decorated hollow TiO2 catalyst drives the efficient photocatalytic degradation/catalytic hydrogenation of 4-nitrophenol","authors":"Ying Zhang , Yingguan Xiao , Xiang Liu , Zhengliang Yin , Shunsheng Cao","doi":"10.1016/j.jtice.2022.104274","DOIUrl":"https://doi.org/10.1016/j.jtice.2022.104274","url":null,"abstract":"<div><p>The excellent photocatalytic degradation/catalytic reduction of phenolic pollutants still is a challenge. Here, we report a new silver/carbon co-decorated hollow TiO<sub>2</sub> photocatalyst (Ag/C-TiO<sub>2</sub>) by depositing Ag NPs on the surface of carbon decorated hollow TiO<sub>2</sub> sphere. This preparation process mainly involves in the synthesis of CPS@TiO<sub>2</sub> template, the immobilization of silver ions, the preparation of carbon co-decorated hollow TiO<sub>2</sub>, and the formation of Ag/C-TiO<sub>2</sub> photocatalyst. The as-synthesized Ag/C-TiO<sub>2</sub> photocatalyst exhibits a complete removal (100%) of phenolic pollutants (phenol or 4-nitrophenol) under simulated sunlight due to the synergistic effect of silver decoration and carbon species. Notably, corresponding 4-aminophenol is achieved almost quantitatively towards the hydrogenation of 4-nitrophenol. Especially, the Ag/C-TiO<sub>2</sub> photocatalyst exhibits a good stability and recyclability towards the photocatalytic degradation/reduction of 4-NP. Therefore, this work presents a rational design concept of highly efficient photocatalysts for environmental remediation.</p></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"133 ","pages":"Article 104274"},"PeriodicalIF":5.7,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"1739835","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}
Yu Gao , Zhitao Han , Guangpeng Zhai , Liguo Song , Jingming Dong , Shaolong Yang , Xinxiang Pan
{"title":"Mechanistic insight into the promoting effect of partial substitution of Mn by Ce on N2 selectivity of MnTiOx catalyst for NH3-SCR of NO","authors":"Yu Gao , Zhitao Han , Guangpeng Zhai , Liguo Song , Jingming Dong , Shaolong Yang , Xinxiang Pan","doi":"10.1016/j.jtice.2022.104269","DOIUrl":"https://doi.org/10.1016/j.jtice.2022.104269","url":null,"abstract":"<div><h3>Background</h3><p>Owing to excellent low-temperature activity and environmentally friendliness, Mn-based catalyst is commonly considered as one of the promising alternatives to traditional V-based catalysts for NH<sub>3</sub>-SCR of NO. However, Mn-based catalysts still suffer from some drawbacks, such as poor N<sub>2</sub> selectivity and narrow operating temperature window.</p></div><div><h3>Methods</h3><p>Herein, MnTiO<em><sub>x</sub></em> catalyst was synthesized through a facile coprecipitation method. Ce was adopted to partially substitute Mn in MnTiO<em><sub>x</sub></em> catalyst to promote N<sub>2</sub> selectivity and high-temperature activity.</p></div><div><h3>Significant findings</h3><p>The partial substitution of Mn by Ce in MnTiO<em><sub>x</sub></em> catalyst could significantly improve N<sub>2</sub> selectivity and widen operating temperature window. The higher substitution rate of Mn by Ce was, the better N<sub>2</sub> selectivity of Ce MnTiO<em><sub>x</sub></em> catalyst was. Partial substitution of Mn by Ce led to mild redox property, enhanced surface acidity, lower surface Mn<sup>4+</sup> and chemisorbed oxygen species proportion on catalyst surface. Besides, partial substitution of Mn by Ce was in favor of the generation NH<sub>4</sub>NO<sub>2</sub> species in NH<sub>3</sub> oxidation reaction, and boosted the consumption of -NH<sub>2</sub> species during NH<sub>3</sub>-SCR reaction, which was conducive to N<sub>2</sub> formation. The reactions between adsorbed NH<sub>3</sub> species and oxygen species through Langmuir-Hinshelwood mechanism might be inhibited by partial substitution of Mn by Ce, thus effectively restraining N<sub>2</sub>O formation.</p></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"133 ","pages":"Article 104269"},"PeriodicalIF":5.7,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2303621","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}
Hassan Hajabdollahi, Amin Saleh, Vahid Ghamari, Mohammad Shafiey Dehaj
{"title":"Technical and economic evaluation of the combined production cooling, heating, power, freshwater, and hydrogen (CCHPWH) system in the cold climate","authors":"Hassan Hajabdollahi, Amin Saleh, Vahid Ghamari, Mohammad Shafiey Dehaj","doi":"10.1016/j.jtice.2022.104262","DOIUrl":"https://doi.org/10.1016/j.jtice.2022.104262","url":null,"abstract":"<div><h3>Background</h3><p>Multi-generation plant is a decentralized, energy-efficient method of different type of energy production. Such a system can deliver multiple benefits and advantages compared to conventional energy production such as improvement in the efficiency, emission, cost and reliability.</p></div><div><h3>Methods</h3><p>Technical-economic analysis of the combined cooling, heating, power, freshwater and hydrogen generation system (CCHPWH) are presented in this paper. Selecting the nominal power of prime movers, their numbers, the cooling capacity of absorption and electrical chillers, the heating capacity of auxiliary boiler, electric cooling ratio (the ratio of electrical chiller capacity to the cooling load demand), motive steam pressure, number of effects, motive steam flow rate, feed flow rate and 24 partial loads for the prime mover during in the year are considered as 35 design parameters. The optimization of the studied system was used by the genetic algorithm to obtain the minimum total annual cost (TAC) as an objective function. The total annual cost includes economic, energy and environmental parameters. It should be noted that selling/buying electricity to/from the grid is allowable in this study.</p></div><div><h3>Significant findings</h3><p>The optimum results showed 24.8% reduction in the total annual cost of the CCHPWH system using a gas engine as prime mover as compared with a gas turbine. In addition, the exergy efficiency of the cogeneration system in the optimal state for the prime mover of the gas turbine and the gas engine was obtained 31.21% and 45.58%, respectively. Finally, the optimal results in different cases were compared and results were discussed.</p></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"133 ","pages":"Article 104262"},"PeriodicalIF":5.7,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2075743","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}
Jun Sun, Hongbo Shi, Jiazhen Zhu, Bing Song, Yang Tao, Shuai Tan
{"title":"Self-attention-based Multi-block regression fusion Neural Network for quality-related process monitoring","authors":"Jun Sun, Hongbo Shi, Jiazhen Zhu, Bing Song, Yang Tao, Shuai Tan","doi":"10.1016/j.jtice.2021.11.007","DOIUrl":"https://doi.org/10.1016/j.jtice.2021.11.007","url":null,"abstract":"<div><h3>Background</h3><p>For plant-wide process with multiple operation units, local-global modeling is an efficient method to achieve quality-related fault detection. However, most of algorithms based on local-global modeling ignore the correlation between sub-blocks. This will result in poor performance of the extracted global quality-related features.</p></div><div><h3>Methods</h3><p>This paper focus on the correlation between sub-blocks and proposes Self-attention-based Multi-block regression fusion Neural Network (SMNN) to achieve efficient quality-related fault detection for nonlinear multi-unit process. Firstly, to focus on quality-related information, the key variables are selected. Then, to extract quality-related features in each sub-block, a pre-training approach is used, i.e. a deep neural network-based regression network between process variables and quality variables is constructed in each sub-block. Secondly, considering the correlation between the sub-blocks, self-attention mechanism is used to integrate the quality-related feature from each block. With the help of an additional regression network, the quality-related features of sub-blocks are fine-tuned and the global features are extracted. Finally, quality-related statistic is constructed to detect faults.</p></div><div><h3>Findings</h3><p>The proposed method shows good performance in Tennessee-Eastman process, which demonstrates the effectiveness of the method. It also shows that considering the potential relationships between sub-blocks during model construction helps in the extraction of global features.</p></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"133 ","pages":"Article 104140"},"PeriodicalIF":5.7,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"1950526","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}
Mohammad-Reza Mohammadi , Fahimeh Hadavimoghaddam , Saeid Atashrouz , Ali Abedi , Abdolhossein Hemmati-Sarapardeh , Ahmad Mohaddespour
{"title":"Toward predicting SO2 solubility in ionic liquids utilizing soft computing approaches and equations of state","authors":"Mohammad-Reza Mohammadi , Fahimeh Hadavimoghaddam , Saeid Atashrouz , Ali Abedi , Abdolhossein Hemmati-Sarapardeh , Ahmad Mohaddespour","doi":"10.1016/j.jtice.2022.104220","DOIUrl":"https://doi.org/10.1016/j.jtice.2022.104220","url":null,"abstract":"<div><h3>Background</h3><p>The use of novel and green solvents like ionic liquids (ILs) for the capture of air pollutant gases has gained extensive attention in recent years. However, getting reliable and fast predictions of gases solubility in ILs is complex.</p></div><div><h3>Methods</h3><p><span>Four soft computing methods including deep belief network (DBN), group method of data handling (GMDH), genetic programming (GP), and K-nearest neighbor (KNN) were utilized for estimating the solubility of sulfur dioxide (SO</span><sub>2</sub>) in ILs. A total of 374 experimental data points of SO<sub>2</sub> solubility in 15 types of ILs were collected and used for model development. Moreover, Valderrama-Patel-Teja (VPT), Zudkevitch-Joffe (ZJ), Peng-Robinson (PR), Redlich-Kwong (RK), and Soave-Redlich-Kwong (SRK) equations of state (EOSs) were applied for the solubility predictions in the SO<sub>2</sub> + ILs systems.</p></div><div><h3>Significant findings</h3><p>The results illustrated that DBN model is the most reliable predictive tool for the SO<sub>2</sub> solubility in ILs by having an average absolute percent relative error (AAPRE) of 3.56%. Furthermore, the proposed simple to use GMDH mathematical correlation also provides good estimations with an AAPRE of 8.05%. Despite the weaker performance of the EOSs than the intelligent models, the PR EOS presented better estimations among other EOSs for the SO<sub>2</sub> solubility in ILs.</p></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"133 ","pages":"Article 104220"},"PeriodicalIF":5.7,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2219590","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}
B. Janani , Saud S. Al-amri , Mohammad K. Okla , Asmaa Mohebaldin , Walid Soufan , Bander Almunqedhi , Mostafa A. Abdel-Maksoud , Hamada AbdElgawad , Ajith M. Thomas , Lija L. Raju , S. Sudheer Khan
{"title":"High performing p-n system of CaFe2O4 coupled ZnO for synergetic degradation of Rhodamine B with white-light photocatalysis and bactericidal action","authors":"B. Janani , Saud S. Al-amri , Mohammad K. Okla , Asmaa Mohebaldin , Walid Soufan , Bander Almunqedhi , Mostafa A. Abdel-Maksoud , Hamada AbdElgawad , Ajith M. Thomas , Lija L. Raju , S. Sudheer Khan","doi":"10.1016/j.jtice.2022.104271","DOIUrl":"https://doi.org/10.1016/j.jtice.2022.104271","url":null,"abstract":"<div><h3>Background</h3><p>Environmental pollution demands the fabrication of suitable nano-photocatalyst that works under white-light irradiation. The effective interfacial engineering is required for better separation of charges.</p></div><div><h3>Method</h3><p>Here, the novel magnetic CaFe<sub>2</sub>O<sub>4</sub>-ZnO nanophotocatalyst was synthesized by adopting a sonochemical method. The CaFe<sub>2</sub>O<sub>4</sub>-ZnO was analyzed using HRTEM, XRD, FTIR, BET, UV-visible DRS, BET, EIS, and photoluminescence analysis. The photocatalytic performance of CaFe<sub>2</sub>O<sub>4</sub>-ZnO is evaluated by decolourization of Rhodamine B (RhB). Further, the particles’ multifunctionality was evaluated by testing its antibacterial activity against <em>Bacillus subtilis</em> and <em>Escherichia coli</em> under dark and light.</p></div><div><h3>Significant findings</h3><p>Here, 97.5% of RhB (25 mg/L) was degraded by CaFe<sub>2</sub>O<sub>4</sub>-ZnO (60 mg/L) under visible light. The kinetic rate of photocatalysis by CaFe<sub>2</sub>O<sub>4</sub>-ZnO was 0.027 min<sup>−1</sup> which was 13.5 and 9 folds higher relative to pristine CaFe<sub>2</sub>O<sub>4</sub> and ZnO. At pH 9, the RhB displayed higher photodegradation. Trapping experiments indicate <strong>·</strong>OH radical severe a key role in RhB degradation. The formation of p-n interface boosted better charge separation and improved ROS generation. At 50 mg/L CaFe<sub>2</sub>O<sub>4</sub>-ZnO, the antibacterial performance under light was 98% against <em>B. subtilis</em> and 99.9% against <em>E. coli</em>. The present study reports CaFe<sub>2</sub>O<sub>4</sub>-ZnO nanophotocatalyst for the effective environmental remediation through photocatalysis and as an antibacterial agent.</p></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"133 ","pages":"Article 104271"},"PeriodicalIF":5.7,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2303622","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}
Changyang Li , Xiaohan Liu , Peng Wang , Dun Zhang
{"title":"Design of dual-scale composite structured superhydrophobic surfaces for atmospheric corrosion prevention based on coalescence-induced droplet jumping","authors":"Changyang Li , Xiaohan Liu , Peng Wang , Dun Zhang","doi":"10.1016/j.jtice.2022.104308","DOIUrl":"https://doi.org/10.1016/j.jtice.2022.104308","url":null,"abstract":"<div><h3>Background</h3><p>The coalescence-induced droplet self-jumping behavior on superhydrophobic surfaces (SHS) provides a new idea for atmospheric corrosion prevention. Although the influence on droplet self-jumping on different scales in single structure has been well understood, the mechanism of composite structures on droplet self-jumping, especially the process of atmospheric corrosion prevention is still unclear.</p></div><div><h3>Methods</h3><p>In this work, SHS that composite structured on micron-scale and nano-scale were designed on copper substrate at given salt solution concentration using hydrothermal method; and the difference of their droplet self-jumping behavior on surface was explored in energy perspective.</p></div><div><h3>Significant findings</h3><p>Results showed that the nano-scale composite structured SHS was more conducive to droplet self-jumping for having smaller top layer structures and interfacial adhesion (<em>E</em><sub>int</sub>). Furthermore, the nano-scale composite structured SHS exhibited superior corrosion protection performance due to the wetting transition by droplet self-jumping. This study provides theoretical guidance for the development of corrosion prevention with composite structured SHS based on coalescence-induced droplet self-jumping behavior.</p></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"133 ","pages":"Article 104308"},"PeriodicalIF":5.7,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2303624","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":"Ni-Pb-Te phase equilibria and interfacial reactions in Ni/PbTe couples","authors":"Sinn-Wen Chen , Zhi-Kai Hu , Cheng-Chun Ching","doi":"10.1016/j.jtice.2021.104194","DOIUrl":"https://doi.org/10.1016/j.jtice.2021.104194","url":null,"abstract":"<div><h3>Background</h3><p>PbTe is an important thermoelectric compound. Ni is commonly used as a barrier layer. To provide fundamental information, an Ni-Pb-Te phase equilibria isothermal section at 650 °C and Ni/PbTe interfacial reactions at 650 <sup>o</sup>C, 500 <sup>o</sup>C and 400 <sup>o</sup>C are determined.</p></div><div><h3>Methods</h3><p>The isothermal section is proposed based on results of equilibrated alloys and related phase diagrams. The interfacial reactions are examined using reaction couples.</p></div><div><h3>Significant Findings</h3><p>There is no ternary compound. At 650 <sup>o</sup>C, the liquid phase extending from the Pb corner has significant symmetrical solubilities of Ni and Te, and displays a peculiar deep and narrow shape. No interfacial reactions are observed in the Ni/PbTe couple heat-treated at 500 <sup>o</sup>C and 400 <sup>o</sup>C for a month. However, significant reactions are observed when reacted at 650 <sup>o</sup>C. Reaction zone thickness is 120 μm when reacted for 30 min. The reaction zone has many phases, and yet has clear phase region boundaries. Liquid and β-Ni<sub>3</sub>Te<sub>2</sub> phases are formed, and the reaction path is Ni/β-Ni<sub>3</sub>Te<sub>2</sub>+Liquid (I)/Liquid (I)/PbTe. Many phases were formed from solidification when the couple was removed from a furnace. Ni is the dominating diffusion species in the Ni/PbTe couples. Ni penetrates into the PbTe substrate, reacts with Te to form Ni<sub>3</sub>Te<sub>2</sub>, and the liquid phase is formed with excess Pb.</p></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"133 ","pages":"Article 104194"},"PeriodicalIF":5.7,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2075604","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}
Xinmei Lu, Liying Liu, Haoran Liu, Guo Tian, Gao Peng, Li Zhuo, Zhe Wang
{"title":"Zeolite-X synthesized from halloysite nanotubes and its application in CO2 capture","authors":"Xinmei Lu, Liying Liu, Haoran Liu, Guo Tian, Gao Peng, Li Zhuo, Zhe Wang","doi":"10.1016/j.jtice.2022.104281","DOIUrl":"https://doi.org/10.1016/j.jtice.2022.104281","url":null,"abstract":"<div><h3>Background</h3><p>: Zeolite-X has good selective adsorption, ion exchange and hydrophilic properties, and has been widely studied and applied in the chemical industry. Halloysite nanotubes (HNTs), with a unique tubular microstructure, natural availability, and low cost. The use of HNTs to synthesize X zeolites reduces production costs, leading to large-scale industrial production applications.</p></div><div><h3>Methods</h3><p>: In this study, zeolite-X, with high crystallinity and a large specific surface area, was synthesized, for the first time, by purifying HNTs, calcining HNTs and hydrothermal synthesis. The influence of calcination time, crystallization temperature, crystallization time and NaOH concentration on the crystal phase and the static saturated water absorption of zeolite-X were investigated. The structure, shape and thermal stability of the synthesized zeolite-X were characterized by XRD, TEM, and FT-IR techniques and analysis methods.</p></div><div><h3>Significant findings</h3><p>: Zeolite-X synthesized by this method has good crystallinity, uniform particle size and similar thermal stability to industrial zeolite. This study reports a new synthesis method to obtain zeolite 13X, with potential application in CO<sub>2</sub> capture from flue gases.</p></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"133 ","pages":"Article 104281"},"PeriodicalIF":5.7,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2075605","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}