RSC Mechanochemistry最新文献_第3页

Thermodynamic and kinetic study of the effect of LiCl and NaCl on the thermal dehydrogenation of Ca(AlH4)2† LiCl和NaCl对Ca(AlH4)2†热脱氢影响的热力学和动力学研究

RSC Mechanochemistry Pub Date : 2025-05-13 DOI: 10.1039/D4MR00140K

Franziska Habermann, Anneliese Wirth, Konrad Burkmann, Jakob Kraus, Bianca Störr, Hartmut Stöcker, Jürgen Seidel, Jens Kortus, Roman Gumeniuk, Klaus Bohmhammel and Florian Mertens

引用次数: 0

Thermally accelerated Heck reaction under direct mechanocatalysis using palladium milling balls† 用钯磨球直接机械催化热加速Heck反应。

RSC Mechanochemistry Pub Date : 2025-05-13 DOI: 10.1039/D5MR00032G

Johanna Templ, Suhmi Hwang, Tino Schwemin, Hakan Baltaci and Lars Borchardt

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Mechanochemically micronised Na/NaCl; a superfine reductant† 机械化学微粉化Na/NaCl；超细还原剂†

RSC Mechanochemistry Pub Date : 2025-05-09 DOI: 10.1039/D5MR00039D

Laura E. English, Ross A. Jackson, Nicholas J. Evans, Dawid J. Babula, Harvey J. Draper, Sarah R. Brown, Joseph Fletcher, David J. Liptrot and Kyle G. Pearce

引用次数: 0

Calorimetric determination of the heat capacity function and absolute entropy of yttrium borohydride (Y(BH4)3) mechanochemically prepared 用量热法测定机械化学制备的硼氢化钇（Y(BH4)3）的热容函数和绝对熵

RSC Mechanochemistry Pub Date : 2025-05-06 DOI: 10.1039/D4MR00124A

Konrad Burkmann, Franziska Habermann, Bianca Störr, Jürgen Seidel, Roman Gumeniuk, Klaus Bohmhammel and Florian Mertens

{"title":"Calorimetric determination of the heat capacity function and absolute entropy of yttrium borohydride (Y(BH4)3) mechanochemically prepared","authors":"Konrad Burkmann, Franziska Habermann, Bianca Störr, Jürgen Seidel, Roman Gumeniuk, Klaus Bohmhammel and Florian Mertens","doi":"10.1039/D4MR00124A","DOIUrl":"https://doi.org/10.1039/D4MR00124A","url":null,"abstract":"Over the last two decades, complex metal hydrides have attracted attention in various fields such as chemical hydrogen storage, solid state electrolytes and superconductivity. In this context, we determined thermodynamic properties of the complex metal hydride Y(BH4)3. Yttrium borohydride was prepared by solid state metathesis yielding a mixture containing three equivalents lithium chloride beside the boranate. The benefit of the mechanochemical preparation procedure compared to the classical wet chemical one is to avoid the desolvation step which can lead to a partial decomposition of the hydride. The heat capacity of the compound as a function of the temperature covering a temperature range from 2 K to 370 K was determined using two different calorimetric techniques. Based on the heat capacity data, the standard entropy at 298.15 K was obtained. From the evaluation of the low temperature heat capacity region the Sommerfeld coefficient and the Debye temperature were derived.","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 4","pages":" 563-572"},"PeriodicalIF":0.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/mr/d4mr00124a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of lead dodecyl sulfate nanorod materials mediated by mechanochemistry and green solvent-free catalytic synthesis of heterocyclic derivatives† 机械化学介导十二烷基硫酸铅纳米棒材料的制备及绿色无溶剂催化合成杂环衍生物

RSC Mechanochemistry Pub Date : 2025-05-06 DOI: 10.1039/D4MR00123K

Zhiqiang Wu, Yuan Min, Yongqin Li, Fang Qian, Lin-an Cao, Rong Tan, Enke Feng, Jiya Ding and Pengxi Jiang

{"title":"Preparation of lead dodecyl sulfate nanorod materials mediated by mechanochemistry and green solvent-free catalytic synthesis of heterocyclic derivatives†","authors":"Zhiqiang Wu, Yuan Min, Yongqin Li, Fang Qian, Lin-an Cao, Rong Tan, Enke Feng, Jiya Ding and Pengxi Jiang","doi":"10.1039/D4MR00123K","DOIUrl":"https://doi.org/10.1039/D4MR00123K","url":null,"abstract":"In this work, the lead dodecyl sulfate material (Pb(DS)2) was successfully synthesized for the first time via a mechanochemical ball milling method. The synthesized material was comprehensively analyzed using scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and nuclear magnetic resonance (NMR) spectroscopy. The results demonstrate that the Pb(DS)2 catalyst, synthesized via solvent-free mechanical ball milling, possesses a distinctive solid nanorod morphology. Furthermore, the catalyst efficiently promotes the synthesis of heterocyclic derivatives in a solvent-free environment within 20 minutes, achieving a target product yield of up to 98%. Specifically, it produced bis(indolyl)methane derivatives with yields ranging from 78% to 98%, and quinoxaline derivatives with yields ranging from 87% to 98% within the same timeframe. The Pb(DS)2 catalyst also exhibits remarkable catalytic activity in the Biginelli reaction. Notably, the catalyst maintains excellent and stable performance over eight recycling cycles.","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 4","pages":" 584-597"},"PeriodicalIF":0.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/mr/d4mr00123k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rational screening of milling parameters for Ru–Na/Al2O3 dual-function materials for integrated CO2 capture and methanation† Ru-Na /Al2O3双功能材料制粉工艺参数的合理筛选

RSC Mechanochemistry Pub Date : 2025-05-05 DOI: 10.1039/D4MR00147H

Andrea Braga, Maila Danielis, Sara Colussi and Alessandro Trovarelli

{"title":"Rational screening of milling parameters for Ru–Na/Al2O3 dual-function materials for integrated CO2 capture and methanation†","authors":"Andrea Braga, Maila Danielis, Sara Colussi and Alessandro Trovarelli","doi":"10.1039/D4MR00147H","DOIUrl":"https://doi.org/10.1039/D4MR00147H","url":null,"abstract":"The interest in the use of mechanochemistry as a green alternative to conventional solution-based synthesis methods has been steadily growing in recent years. Recently, Dual-Function Materials (DFMs) have been explored for the preparation of multicomponent systems which combine a sorbent and a catalytic phase co-supported on a support oxide for the capture of CO2 from flue gases and its subsequent conversion into added-value products when exposed to H2 (or CH4) in a chemical-looping-type reaction. However, the complexity of setting the right milling parameters, which are interconnected and strongly dependent on the precursor materials, is exacerbated in the multi-component system. In this work, we address this issue by employing a Design of Experiments (DoE) statistical approach for the screening of the most relevant milling parameters for the synthesis of Ru–Na/Al2O3 DFMs for integrated CO2 capture and methanation (ICCU-MET). The milling intensity and the organic precursors proved to be the key factors positively affecting the DFMs' capture capacity and CH4 conversion, respectively.","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 4","pages":" 516-528"},"PeriodicalIF":0.0,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/mr/d4mr00147h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solid-state mechanochemical activation of anthracene–maleimide adducts: the influence of the polymer matrix† 蒽-马来酰亚胺加合物的固态机械化学活化：聚合物基质的影响

RSC Mechanochemistry Pub Date : 2025-04-22 DOI: 10.1039/D5MR00026B

Justus P. Wesseler, James R. Hemmer, Christoph Weder and José Augusto Berrocal

{"title":"Solid-state mechanochemical activation of anthracene–maleimide adducts: the influence of the polymer matrix†","authors":"Justus P. Wesseler, James R. Hemmer, Christoph Weder and José Augusto Berrocal","doi":"10.1039/D5MR00026B","DOIUrl":"https://doi.org/10.1039/D5MR00026B","url":null,"abstract":"The repertoire of established mechanophores has been on a steady rise over the last few years, holding the promise of generating materials capable of delivering programmable, beneficial responses upon mechanical stimulation. However, investigations are usually confined to demonstrating activation within limited and seemingly arbitrary choices of polymer matrices. In contrast, the broader applicability of the mechanophore across various types of polymer materials is rarely explored. The experimental techniques generally used to achieve mechanochemical activation are also a source of discrepancy. Ultrasonication of dilute polymer solutions is a popular method that applies extreme strain rates to isolated, solvated chains. The technique is practical and convenient, but its experimental conditions are not conducive to elucidating the activity of the same mechanophore in a bulk polymer system under tensile strain. Here, we report a comparative study on the mechanochemical behaviour of anthracene–maleimide Diels–Alder adducts in a series of polymeric materials. We embed the mechanophores either in the backbone of linear polymers or as cross-links of polymer networks. We show that the solution-phase ultrasonication efficiently activates the mechanophores, regardless of the design of the linear polymer. In contrast, mechanophore activation in bulk is highly dependent on the polymer matrix, topology, and the connectivity of the mechanophore and the matrix.","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 4","pages":" 544-555"},"PeriodicalIF":0.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/mr/d5mr00026b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Moving Mechanochemistry Forward: Mechanochemistry and the non-covalent bond 推动机械化学的发展：机械化学与非共价键

RSC Mechanochemistry Pub Date : 2025-04-22 DOI: 10.1039/D5MR90011E

Adam A. L. Michalchuk and Tomislav Friščić

引用次数: 0

Ultrasound-based mechanochemical generation of reactive oxygen species from nanoparticle-conjugated amyloid fibrils† 纳米粒子共轭淀粉样原纤维的超声机械化学生成活性氧

RSC Mechanochemistry Pub Date : 2025-04-21 DOI: 10.1039/D5MR00041F

Soumi Das, Jayanta Dolai, Buddhadev Mukherjee, Anupam Maity and Nikhil R. Jana

{"title":"Ultrasound-based mechanochemical generation of reactive oxygen species from nanoparticle-conjugated amyloid fibrils†","authors":"Soumi Das, Jayanta Dolai, Buddhadev Mukherjee, Anupam Maity and Nikhil R. Jana","doi":"10.1039/D5MR00041F","DOIUrl":"https://doi.org/10.1039/D5MR00041F","url":null,"abstract":"Piezoelectric biomaterials have diverse potential biomedical applications via ultrasound-based wireless mechanochemical reaction at a remote area of the body/medical device. However, most biomaterials have weak piezoelectric properties compared to chemically designed piezoelectric materials. In the current approach, piezoelectric properties of certain biomaterials are enhanced by transforming them into anisotropic fibril/sheet-like morphology. Here, we demonstrate that the piezoelectric property of amyloid fibrils can be enhanced by 2 times via conjugation with nanoparticles and this can enhance the ultrasound-based mechanochemical production of reactive oxygen species by 4 times. In particular, we have synthesized nanoparticle-conjugated lysozyme fibrils with a piezoelectric constant value as high as 82 pm V−1. Thin films derived from these materials can generate periodic voltage/current pulses under the exposure of medical-grade ultrasound that can reach up to 1 V/15 nA. A colloidal dispersion of these materials generates superoxide/hydroxyl radicals via ultrasound-based mechanochemical reaction and degrade a dye. This strategy can be adapted to improve the mechanochemical reaction performance of weakly piezoelectric materials.","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 4","pages":" 556-562"},"PeriodicalIF":0.0,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/mr/d5mr00041f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

One-pot synthesis of aldimines via single screw extrusion: a mechanochemical approach† 单螺杆挤压一锅合成醛胺：机械化学方法†

RSC Mechanochemistry Pub Date : 2025-04-17 DOI: 10.1039/D5MR00004A

Aditya Sunil Lade, Khetal Vasant Surana, Sai Srinivas Ponugoti and Shreerang V. Joshi

{"title":"One-pot synthesis of aldimines via single screw extrusion: a mechanochemical approach†","authors":"Aditya Sunil Lade, Khetal Vasant Surana, Sai Srinivas Ponugoti and Shreerang V. Joshi","doi":"10.1039/D5MR00004A","DOIUrl":"https://doi.org/10.1039/D5MR00004A","url":null,"abstract":"We report a continuous, solvent-free method for aldimine synthesis using single-screw extrusion (SSE) that achieves high yields with water as the sole byproduct. Under optimized conditions, SSE delivered aldimines in high to near-quantitative yields (>99% for selected derivatives) across diverse substrate classes including cyclohexanol amines, L-phenylalaninate methyl esters and ethylenediamine-derived bis-aldimines without requiring product purification. Furthermore, an optimized process is demonstrated, with a throughput rate of 6740 g day−1, corresponding to a space-time yield of 1716 kg m−3 day−1. The extrusion process outperformed mechanochemical grinding and batch methods in efficiency and crystallinity, as evidenced by the DSC endothermic peak. The synthesized compounds were characterized using various analytical tools like IR, GC-MS, NMR, single crystal XRD and HRMS. By leveraging mechanochemistry in a continuous flow system, SSE provides a simple yet powerful platform that significantly expands the possibilities for sustainable organic synthesis.","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 4","pages":" 573-583"},"PeriodicalIF":0.0,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/mr/d5mr00004a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0