发布求助
文献互助 智能选刊 最新文献

Journal of Flow Chemistry最新文献

筛选
英文 中文
Enantioselective catalytic Strecker reaction on cyclic (Z)-aldimines in flow: reaction optimization and sustainability aspects 流动中环状（Z）-醛亚胺对映选择性催化Strecker反应：反应优化和可持续性
IF 2 4区 化学
Journal of Flow Chemistry Pub Date : 2023-07-19 DOI: 10.1007/s41981-023-00279-9
Antonella Ilenia Alfano, Andrea Sorato, Alessia Ciogli, Heiko Lange, Margherita Brindisi
{"title":"Enantioselective catalytic Strecker reaction on cyclic (Z)-aldimines in flow: reaction optimization and sustainability aspects","authors":"Antonella Ilenia Alfano,&nbsp;Andrea Sorato,&nbsp;Alessia Ciogli,&nbsp;Heiko Lange,&nbsp;Margherita Brindisi","doi":"10.1007/s41981-023-00279-9","DOIUrl":"10.1007/s41981-023-00279-9","url":null,"abstract":"<div><p>Catalytic enantioselective Strecker reactions on an achiral substrate using sub-stoichiometric amounts of a chiral catalyst represent an evolving key strategy for the effective synthesis of α-amino nitriles. We herein disclosed the set-up of a flow-based methodology for enantioselective Strecker, employing ethyl cyanoformate as a relatively safe cyanide source, a cinchona-based catalyst, and methanol as additive. A thorough exploration of key parameters allowed the identification of the most efficient reagent mixing mode, the optimum solvent for the flow synthesis, minimum catalyst loading, additive, temperature, and residence time. The newly developed method allows straightforward reaction channeling towards the fast and complete formation of the α-amino nitrile products, thus reducing the yield drop due to indolenine degradation during long-lasting batch-wise reactions. Moreover, we herein provide preliminary hints for sustainability, by proposing a simple procedure for catalyst recycling, thus opening the way for further optimization of the proposed methodology.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":630,"journal":{"name":"Journal of Flow Chemistry","volume":"14 1","pages":"197 - 210"},"PeriodicalIF":2.0,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41981-023-00279-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45405350","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}
引用次数: 0
Continuous flow process development for the synthesis of an industrial raw material via solvent-free aromatic Claisen rearrangement 无溶剂芳香族克拉森重排法合成工业原料的连续流工艺开发
IF 2 4区 化学
Journal of Flow Chemistry Pub Date : 2023-07-14 DOI: 10.1007/s41981-023-00275-z
Nikola Petrovic, Sándor B. Ötvös, C. Oliver Kappe
{"title":"Continuous flow process development for the synthesis of an industrial raw material via solvent-free aromatic Claisen rearrangement","authors":"Nikola Petrovic,&nbsp;Sándor B. Ötvös,&nbsp;C. Oliver Kappe","doi":"10.1007/s41981-023-00275-z","DOIUrl":"10.1007/s41981-023-00275-z","url":null,"abstract":"<div><p>A high-temperature continuous flow protocol is reported for the intensified synthesis of an important industrial raw material via aromatic Claisen rearrangement of the corresponding diallyl ether precursor. The process takes advantage of solvent-free conditions, thereby maximizing productivity whilst reducing cost and environmental impact. By precise control over reaction temperature and residence times, a high-yielding and selective synthesis is achieved that ensures improved safety and scalability of the exothermic transformation compared with earlier batch methodologies.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":630,"journal":{"name":"Journal of Flow Chemistry","volume":"13 4","pages":"443 - 447"},"PeriodicalIF":2.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41981-023-00275-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48897269","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}
引用次数: 0
3D printed reactors and Kessil lamp holders for flow photochemistry: design and system standardization 用于流动光化学的3D打印反应器和Kessil灯座:设计和系统标准化
IF 2 4区 化学
Journal of Flow Chemistry Pub Date : 2023-07-05 DOI: 10.1007/s41981-023-00278-w
Matthew R. Penny, Stephen T. Hilton
{"title":"3D printed reactors and Kessil lamp holders for flow photochemistry: design and system standardization","authors":"Matthew R. Penny,&nbsp;Stephen T. Hilton","doi":"10.1007/s41981-023-00278-w","DOIUrl":"10.1007/s41981-023-00278-w","url":null,"abstract":"<div><p>A low-cost 3D printed standardized flow-photochemistry setup has been designed and developed for use with a pressure-driven flow system using photochemistry lamps available in most laboratories. In this research, photochemical reactors were 3D printed from polypropylene which facilitated rapid optimization of both reactor geometry and experimental setup of the lamp housing system. To exemplify the rapidity of this approach to optimization, a Kessil LED lamp was used in the bromination of a range of toluenes in the 3D printed reactors in good yields with residence times as low as 27 s. The reaction compared favorably with the batch photochemical procedure and was able to be scaled up to a productivity of 75 mmol h<sup>−1</sup>.</p></div>","PeriodicalId":630,"journal":{"name":"Journal of Flow Chemistry","volume":"13 4","pages":"435 - 442"},"PeriodicalIF":2.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41981-023-00278-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138528140","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}
引用次数: 0
Continuous morphology-controllable precipitation strategy for europium oxalate hydrates via microchannel reactor 微通道反应器连续形态可控的草酸铕水合物沉淀策略
IF 2.7 4区 化学
Journal of Flow Chemistry Pub Date : 2023-06-30 DOI: 10.1007/s41981-023-00277-x
Keyu Tao, Hao Li, Junjie Cheng, Zhi Cao, Yefan Li
{"title":"Continuous morphology-controllable precipitation strategy for europium oxalate hydrates via microchannel reactor","authors":"Keyu Tao,&nbsp;Hao Li,&nbsp;Junjie Cheng,&nbsp;Zhi Cao,&nbsp;Yefan Li","doi":"10.1007/s41981-023-00277-x","DOIUrl":"10.1007/s41981-023-00277-x","url":null,"abstract":"<div><p>A flow chemistry based continuous morphology-controllable precipitation strategy was successfully developed for synthesis of europium oxalate hydrate microparticles. The effects of flow ratio between raw materials within microchannels on the crystal structure, morphology and particle size distribution of the precipitated products were firstly studied. The results shown that both high yield and controllable morphology were achieved for Eu<sup>3+</sup> precipitation reactions under its low concentration condition. The effects of supersaturation, mixing intensity, and reaction temperatures were also investigated in detail, which proved the continuous preparation of layered microparticles with concentrated size distribution can be achieved by this strategy. Multiple characterizations and comparison experiment synergistically reveal that the feed flow ratios of nitric acid and oxalic acid determines the morphology and particle size distribution due to affecting the mixing degree and phase composition of the precipitation reaction. In addition, the phase and morphology conversion of precipitates after calcination treatment were also studied, the as-calcined metal oxide powder exhibited a decent photoluminescence characteristic. In summary, this work demonstrates a promising precipitation strategy within micro-channels for mass controllable production of high-quality metal oxide materials.</p><h3>Graphical abstract</h3>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 </div>","PeriodicalId":630,"journal":{"name":"Journal of Flow Chemistry","volume":"13 3","pages":"347 - 357"},"PeriodicalIF":2.7,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41981-023-00277-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5151209","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}
引用次数: 0
Continuous heterogeneous synthesis of hexafluoroacetone and its machine learning-assisted optimization 六氟丙酮的连续非均相合成及其机器学习辅助优化
IF 2.7 4区 化学
Journal of Flow Chemistry Pub Date : 2023-06-13 DOI: 10.1007/s41981-023-00273-1
Tingting Qi, Guihua Luo, Haotian Xue, Feng Su, Jianli Chen, Weike Su, Ke-Jun Wu, An Su
{"title":"Continuous heterogeneous synthesis of hexafluoroacetone and its machine learning-assisted optimization","authors":"Tingting Qi,&nbsp;Guihua Luo,&nbsp;Haotian Xue,&nbsp;Feng Su,&nbsp;Jianli Chen,&nbsp;Weike Su,&nbsp;Ke-Jun Wu,&nbsp;An Su","doi":"10.1007/s41981-023-00273-1","DOIUrl":"10.1007/s41981-023-00273-1","url":null,"abstract":"<div><p>Conventional batch synthesis of hexafluoroacetone (HFA), an important pharmaceutical intermediate, suffers from complex catalyst preparation, harsh reaction conditions (up to 200 °C), and low selectivity. In this study, we developed a continuous flow system that employs a micro packed-bed reactor (MPBR) filled with Lewis acid catalysts. After an initial screening of reaction conditions and catalysts in the batch reactor, a Bayesian Optimization model and the multi-objective optimization algorithm qNEHVI were used to find a compromise between conversion and energy efficiency for the reaction in the continuous flow system. After 14 rounds of experiments, BO found the best results with conversion of 98.6%, selectivity of 99.9%, and an energy cost of 0.121 kWh per kg of product at 25.1 °C, atmospheric pressure, and a GHSV of 931.5 h<sup>− 1</sup> reaction conditions. The study demonstrates that BO can be used as an efficient tool for multi-objective optimization of heterogeneous catalysis in continuous flow.</p><h3>Graphical abstract</h3>\u0000 <figure><div><div><div><picture><img></picture></div></div></div></figure>\u0000 </div>","PeriodicalId":630,"journal":{"name":"Journal of Flow Chemistry","volume":"13 3","pages":"337 - 346"},"PeriodicalIF":2.7,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41981-023-00273-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4545528","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}
引用次数: 0
Continuous catalytic aerobic oxidation of o‑chlorotoluene to o-chlorobenzoic acid under slug flow conditions 段塞流条件下邻氯甲苯连续催化好氧氧化制邻氯苯甲酸
IF 2.7 4区 化学
Journal of Flow Chemistry Pub Date : 2023-06-09 DOI: 10.1007/s41981-023-00272-2
Jiming Liu, Linchang Liu, Wei Zhang, Peng Li, Xin Li, Zhiqun Yu, Weike Su
{"title":"Continuous catalytic aerobic oxidation of o‑chlorotoluene to o-chlorobenzoic acid under slug flow conditions","authors":"Jiming Liu,&nbsp;Linchang Liu,&nbsp;Wei Zhang,&nbsp;Peng Li,&nbsp;Xin Li,&nbsp;Zhiqun Yu,&nbsp;Weike Su","doi":"10.1007/s41981-023-00272-2","DOIUrl":"10.1007/s41981-023-00272-2","url":null,"abstract":"<div><h2>\u0000Abstract</h2><div><p>\u0000A continuous-flow process was developed for the aerobic oxidation of <i>o</i>-chlorotoluene (OCT) to <i>o</i>-chlorobenzoic acid (OCBA) with pure oxygen. Acetic acid as cosolvent and CoBr<sub>2</sub>/MnBr<sub>2</sub> as catalyst, with a small amount of acetaldehyde as the radical initiator to make the reaction rapidly stimulates. Through the regulation of gas–liquid mixing, slug flow obtains similar mass transfer coefficient of annular flow and the reactor volume was further reduced. The reaction parameters were easily controlled by take the advantages of continuous-flow reactor. Under the optimal reaction conditions, the isolated yield of OCBA reached up to 94%. Compared with the traditional batch process, shorter residence time, higher product yield and operation safety are achieved by adapting simple continuous-flow system.\u0000</p></div></div>","PeriodicalId":630,"journal":{"name":"Journal of Flow Chemistry","volume":"13 3","pages":"325 - 335"},"PeriodicalIF":2.7,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4393525","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}
引用次数: 0
Accurate determination of the kinetics of toluene nitration in a liquid–liquid microflow system 液-液微流系统中甲苯硝化动力学的精确测定
IF 2.7 4区 化学
Journal of Flow Chemistry Pub Date : 2023-05-22 DOI: 10.1007/s41981-023-00271-3
Jing Song, Yongjin Cui, Yujun Wang, Kai Wang, Jian Deng, Guangsheng Luo
{"title":"Accurate determination of the kinetics of toluene nitration in a liquid–liquid microflow system","authors":"Jing Song,&nbsp;Yongjin Cui,&nbsp;Yujun Wang,&nbsp;Kai Wang,&nbsp;Jian Deng,&nbsp;Guangsheng Luo","doi":"10.1007/s41981-023-00271-3","DOIUrl":"10.1007/s41981-023-00271-3","url":null,"abstract":"<div><p>The nitration of toluene with mixed acid is one of the most representative nitration reactions. Accurate kinetic study is essential for controlling the reaction and designing reactors. Due to the characteristics of fast rate, high exothermicity and heterogeneity in toluene nitration, the effects of mass and heat transfer may result in inaccurate determination of kinetics. In this work, the adiabatic temperature rises of the reaction system were studied to provide precise ranges of experimental conditions for accurately controlling the reaction rate and heat release rate in a liquid–liquid microflow system. The adiabatic temperature rise was successfully controlled to below 0.3 °C. The effects of mass and heat transfer on the reaction rate were completely eliminated, so that the kinetic study was carried out under the control of intrinsic kinetics only. The activation energy for toluene nitration was determined to be 28.00 kJ/mol. The activation energies for the formation of <i>o</i>-nitrotoluene and <i>p</i>-nitrotoluene were obtained for the first time, which were 25.71 and 31.91 kJ/mol, respectively. The obtained kinetic models can predict the reaction performance of toluene nitration very well.\u0000</p></div>","PeriodicalId":630,"journal":{"name":"Journal of Flow Chemistry","volume":"13 3","pages":"311 - 323"},"PeriodicalIF":2.7,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4875728","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}
引用次数: 1
Continuous flow Friedel–Crafts acetylation of phenols and electron-rich arenes and heteroarenes 苯酚和富电子芳烃和杂芳烃的连续流动Friedel-Crafts乙酰化
IF 2.7 4区 化学
Journal of Flow Chemistry Pub Date : 2023-05-09 DOI: 10.1007/s41981-023-00270-4
Kévin Saint-Jacques, André B. Charette
{"title":"Continuous flow Friedel–Crafts acetylation of phenols and electron-rich arenes and heteroarenes","authors":"Kévin Saint-Jacques,&nbsp;André B. Charette","doi":"10.1007/s41981-023-00270-4","DOIUrl":"10.1007/s41981-023-00270-4","url":null,"abstract":"<div><p>An expedient and efficient synthesis of acetyl phloroglucinol from phloroglucinol under continuous flow is reported. This compound is an important building block to access numerous flavonoids. The reported acetylation reaction of phloroglucinol is more efficient than under batch conditions (residence time of 1 min in flow vs 10–15 h in batch; ≥ 98% yield in flow vs 65–86% yield in batch), and proceeds without any formation of the diacetylated product. The desired product was produced with a throughput of ≥ 98 g/h using a simple set-up. The conditions that highlight the use of ethyl acetate, a biomass-derived solvent and acetic anhydride or acetyl chloride were tested in the Friedel–Crafts acetylation of other electron-rich phenols and heterocycles.\u0000</p></div>","PeriodicalId":630,"journal":{"name":"Journal of Flow Chemistry","volume":"13 2","pages":"193 - 199"},"PeriodicalIF":2.7,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4396068","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}
引用次数: 0
Correction to: FOMSy: 3D-printed flexible open-source microfluidic system and flow synthesis of PET-tracer 修正:FOMSy: 3d打印柔性开源微流体系统和pet示踪剂的流动合成
IF 2.7 4区 化学
Journal of Flow Chemistry Pub Date : 2023-04-19 DOI: 10.1007/s41981-023-00269-x
Florian Menzel, Jonathan Cotton, Thomas Klein, Andreas Maurer, Thomas Ziegler, Jochen M. Neumaier
{"title":"Correction to: FOMSy: 3D-printed flexible open-source microfluidic system and flow synthesis of PET-tracer","authors":"Florian Menzel,&nbsp;Jonathan Cotton,&nbsp;Thomas Klein,&nbsp;Andreas Maurer,&nbsp;Thomas Ziegler,&nbsp;Jochen M. Neumaier","doi":"10.1007/s41981-023-00269-x","DOIUrl":"10.1007/s41981-023-00269-x","url":null,"abstract":"","PeriodicalId":630,"journal":{"name":"Journal of Flow Chemistry","volume":"13 3","pages":"359 - 359"},"PeriodicalIF":2.7,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41981-023-00269-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4739672","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}
引用次数: 0
Micro-Batch flow reactor for the photoproduction of H2O2 from water/real seawater 光处理水/真海水中H2O2的微批流反应器
IF 2.7 4区 化学
Journal of Flow Chemistry Pub Date : 2023-04-19 DOI: 10.1007/s41981-023-00257-1
Aswin Gopakumar, Tong Zhang, Shoubhik Das
{"title":"Micro-Batch flow reactor for the photoproduction of H2O2 from water/real seawater","authors":"Aswin Gopakumar,&nbsp;Tong Zhang,&nbsp;Shoubhik Das","doi":"10.1007/s41981-023-00257-1","DOIUrl":"10.1007/s41981-023-00257-1","url":null,"abstract":"<div><p>Photocatalytic generation of H<sub>2</sub>O<sub>2</sub> with heterogeneous catalysts has attracted much attentions and impressive strategies have been used to increase the photocatalytic efficiency. However, applications of these strategies to large scale are still underdeveloped. For this reason, development of flow photocatalytic strategy is highly necessary. Considering this, we have developed a serial micro-batch flow reactor for the generation of H<sub>2</sub>O<sub>2</sub> which could easily scale up the reaction to1L scale with high reproducibility with the modified g-C<sub>3</sub>N<sub>4</sub>. With this flow reactor, the generated concentration of H<sub>2</sub>O<sub>2</sub> has been reached to 6.89 mM and 5.89 mM in pure water and seawater, respectively.</p><h3>Graphical Abstract</h3>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 </div>","PeriodicalId":630,"journal":{"name":"Journal of Flow Chemistry","volume":"13 2","pages":"185 - 192"},"PeriodicalIF":2.7,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4743063","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}
引用次数: 1
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信