Macromolecular Symposia最新文献_第10页

Utilization of Nickel-Modified Natural Zeolite in Catalytic Structural Reforming of Iraqi Naphtha 镍改性天然沸石在伊拉克石脑油催化结构重整中的应用

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400220

Mohsen Ismael Khalil, Raghed Yousif Ghazal, Nabeel Jamal Ayed

{"title":"Utilization of Nickel-Modified Natural Zeolite in Catalytic Structural Reforming of Iraqi Naphtha","authors":"Mohsen Ismael Khalil, Raghed Yousif Ghazal, Nabeel Jamal Ayed","doi":"10.1002/masy.202400220","DOIUrl":"https://doi.org/10.1002/masy.202400220","url":null,"abstract":"This research focuses on the utilization of abundant natural mineral resources in Iraq to prepare both unmodified natural zeolite and nickel-modified zeolite. These zeolites are employed in the catalytic thermal structural reforming process of naphtha distillates (35–200 °C) under initial temperature conditions (100, 150, 200, 250, 300, 350 °C) using a constant catalyst ratio. The zeolites, prepared in two forms, 1% by weight, and with a reaction time of 1 h, are first tested to determine the optimal temperature. Subsequently, the catalyst ratio and reaction time are adjusted based on the initial conditions for each catalyst, to establish the optimum conditions for unmodified zeolite at a temperature of 350 °C, a catalyst ratio of 3%, and a reaction time of 3 h. For nickel-modified zeolite, the optimal conditions are found to be a temperature of 300 °C, a catalyst ratio of 3%, and a reaction time of 3 h. The catalysts exhibited the ability to form rings and facilitate hydrogenation reactions, resulting in the preparation of aromatic compounds that reach threefold their original concentration. Specifically, the concentration increases from 7.1% to 23.61% in the nickel-modified catalyst.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancements in Machine Learning and Artificial Intelligence in Polymer Science: A Comprehensive Review 高分子科学中机器学习和人工智能的进展综述

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400185

Sheetal Mavi, Sarita Kadian, Pradeepta Kumar Sarangi, Ashok Kumar Sahoo, Shruti Singh, M. Z. A. Yahya, Nor Mas Mira Abd Rahman

引用次数: 0

Environmental Concerns of Chemical Materials Usage: Balancing Progress and Law 化学材料使用的环境问题：平衡进展与法律

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400230

Rahma R. Jameel, Ali A. Jubair, Ream A. Hussain, Huda A. Nuaman, Mustafa A. Alheety

{"title":"Environmental Concerns of Chemical Materials Usage: Balancing Progress and Law","authors":"Rahma R. Jameel, Ali A. Jubair, Ream A. Hussain, Huda A. Nuaman, Mustafa A. Alheety","doi":"10.1002/masy.202400230","DOIUrl":"https://doi.org/10.1002/masy.202400230","url":null,"abstract":"The surge in chemical usage outside governorate centers has become a focal point of concern due to its profound environmental impact and potential threats to public safety. This comprehensive article delves into the intricate dynamics of this issue, exploring the current landscape of chemical usage trends, and their environmental repercussions. It critically assesses the existing legal framework on both national and international levels, highlighting challenges in enforcement and the associated public health, and safety concerns. The discussion extends to proposed reforms, emphasizing the need for a strengthened legal framework, and increased community engagement. Case studies offer valuable insights, examining successful models and failures that shape lessons for future policymaking. The article further explores the role of technological advancements in enhancing monitoring and regulatory efforts and advocates for collaborative approaches involving government bodies, industries, and local communities. In conclusion, the article underscores the necessity of finding a delicate balance between economic progress and environmental responsibility. Through a multifaceted approach that incorporates legal reforms, technological innovations, and collaborative strategies, the future outlook envisions a harmonious coexistence of development and sustainability in the regulation of chemical usage outside governorate centers.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adsorption of Haloperidol Drug on Alginate-Attapulgite-Ag NPs Composite 氟哌啶醇类药物在海藻酸盐-凹凸棒石- ag NPs复合材料上的吸附

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400228

Walaa Hazim Hameed, Nashwan Hussein Ali

引用次数: 0

Modeling and Characterization of Ion-Imprinted Polymer for Arsenic Species Removal From Aqueous Solution 离子印迹聚合物去除水中砷的模拟与表征

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202300222

Nurlin Abu Samah

{"title":"Modeling and Characterization of Ion-Imprinted Polymer for Arsenic Species Removal From Aqueous Solution","authors":"Nurlin Abu Samah","doi":"10.1002/masy.202300222","DOIUrl":"https://doi.org/10.1002/masy.202300222","url":null,"abstract":"Arsenic (As) contamination is a global issue, especially in As-rich geological formations. In this study, an ion-imprinted polymer (As(III)-IIP) is synthesized and characterized in terms of kinetic modeling and application via solid phase extraction (SPE). As is detected by using the inductively coupled plasma-mass spectrometer (ICP-MS). The surface study is also included in this study, in which the differences between non-imprinted polymer (NIP) and As(III)-IIP before and after sorption are observed via field electron scanning electron microscope (FESEM). As a result, As(III)-IIP follows the pseudo-second-order of reaction in kinetics and reaches 95% within 5 min of removal. In FESEM micrographs, As(III)-IIP shows the particles on the surface are likely homogenous compared to NIP. Whereas As(III)-IIP after sorption is much more likely bigger than the original As(III)-IIP due to the expansion of particles during agitation in an aqueous solution. In the first cycle, 99.53% ± 0.45% of removal in real wastewater analysis is obtained via SPE. However, for the second cycle onwards, the removal is not removed totally, which shows that a new combination of eluent is required. In conclusion, As(III)-IIP shows good potential as a sorbent to be used for the removal of As from wastewater.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Physicochemical and Microbiological Characteristics of Surinsar Lake in UT of Jammu & Kashmir, India 印度查谟和克什米尔邦Surinsar湖理化和微生物特征分析

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400136

Arvind Kumar Yadav, Arushi Mahajan, Tania Sharma, Indu Bhushan, Ikhwan Syafiq Mohd Noor, Muhd Zu Azhan Yahya

引用次数: 0

Exploring the Potential of Hemp Fiber Composites for Sustainable Materials in Engineering Applications 探索大麻纤维复合材料作为可持续材料在工程中的应用潜力

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202300255

Pulkit Srivastava, Ananda Babu Arumugam, Rajeev Kumar, Tarun Yadav, Serguei V. Savilov, Pawan Singh Dhapola, Anant Prakash Agrawal

{"title":"Exploring the Potential of Hemp Fiber Composites for Sustainable Materials in Engineering Applications","authors":"Pulkit Srivastava, Ananda Babu Arumugam, Rajeev Kumar, Tarun Yadav, Serguei V. Savilov, Pawan Singh Dhapola, Anant Prakash Agrawal","doi":"10.1002/masy.202300255","DOIUrl":"https://doi.org/10.1002/masy.202300255","url":null,"abstract":"The growth in the demand of sustainable materials being used in engineering has created a need for research into new and alternative materials. This research article is intended to explore the potential of hemp fiber composites in different promising areas, including environmentally friendly engineering applications. An in-depth analysis of hemp fiber properties has been conducted with a focus on the mechanical thermal and their chemical characteristics which makes hemp fiber more suitable in various engineering applications. Among the mechanical and thermal properties of hemp fiber reinforced composites, careful evaluation of tensile strength, elastic modulus, impact resistance and thermal stability is most important. A detailed study of basic processing methods has been conducted highlighting the recent advances and challenges in the extraction and preparation of hemp fibers. Further in this research the hemp is analyzed in comparison to other alternative materials including natural and synthetic fibres so that the unique benefits of hemp can be highlighted for various engineering applications. The environmental sustainability of hemp fiber composites is also thoroughly studied, emphasizing their biodegradability and positive contribution to life cycle assessment.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and Characterization of Novel Selenium Bearing 24- and 28-Membered Macrocyclic Schiff Bases and Their Reactivity with Hg (II) Ion 新型含硒24和28元大环席夫碱的合成、表征及其与Hg （II）离子的反应性

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400176

Bhaskar Banerjee, Rajaneesh Kumar Verma, Nidhi Jain, Tarun Yadav, Mustafa A. Alheetyc, M. Z. A. Yahya, Munendra Singh, Vinay Kumar Verma, Ram Chandra Singh

{"title":"Synthesis and Characterization of Novel Selenium Bearing 24- and 28-Membered Macrocyclic Schiff Bases and Their Reactivity with Hg (II) Ion","authors":"Bhaskar Banerjee, Rajaneesh Kumar Verma, Nidhi Jain, Tarun Yadav, Mustafa A. Alheetyc, M. Z. A. Yahya, Munendra Singh, Vinay Kumar Verma, Ram Chandra Singh","doi":"10.1002/masy.202400176","DOIUrl":"https://doi.org/10.1002/masy.202400176","url":null,"abstract":"The present study reports the synthesis of novel selenium containing 24 (1)- and 28 (2)-membered macrocyclic Schiff base ligands and their reactivity with Hg(II) metal ion to form complex 3 and 4, respectively. The synthesis of the ligands are carried out by a simple condensation of 2,6-dibenzoyl-4-methylphenol and bis(aminoethyl/propyl)selenides in [2+2] dipodal manner in dry acetonitrile solvent under inert atmosphere. Furthermore, the reaction between the 24- and 28-membered selenium containing ligands and Hg(II) metal ion are carried out in dry methanol in argon atmosphere. Following the complexation of both the ligands, 1 (C50H48O2N4Se2) and 2 (C54H56O2N4Se2) when reacted with HgBr2 yields monometallic complexes 3 and 4 with molecular composition of C50H50O3N4Se2HgBr2 and C54H58O3N4Se2HgBr2, respectively, as calculated via elemental analysis and mass spectrometry. Moreover, the synthesized compounds are also characterized by various physicochemical techniques to determine the structure and reactivity, which includes UV–vis, FT-IR, multinuclear (1H and 77Se) NMR, and cyclic voltammetry.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis, Characterization, and Biological Activity of 5-Chloroquinolin-8-ol Complexes 5-氯喹啉-8-醇配合物的合成、表征及生物活性研究

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400224

Sakar Mubarak Abdalrazaq, Iyad Suleiman Hamad, Afraa Saber Shihab

{"title":"Synthesis, Characterization, and Biological Activity of 5-Chloroquinolin-8-ol Complexes","authors":"Sakar Mubarak Abdalrazaq, Iyad Suleiman Hamad, Afraa Saber Shihab","doi":"10.1002/masy.202400224","DOIUrl":"https://doi.org/10.1002/masy.202400224","url":null,"abstract":"This study involves the preparation of various organic compounds. Ethyl2-((5-chloroquinolin-8-yl)oxy)acetate compound (S1) is synthesized by the addition of potassium carbonate to 5-chloroquinolin-8-ol and ethylchloroacetate. 2-((5-chloroquinolin-8-yl)oxy)acetohydrazide (S2) are prepared by the reaction compound S1with hydrazine. Several complexes of Mannich bases are obtained by the reaction equimolar amounts of compound (S2) with the metal salt solution of cobalt and cadmium (MCln.XH2O) (S3-S5), using ethanol as the solvent. The synthesized compounds and complexes are characterized using various spectroscopic techniques, including Fourier-Transform Infrared (FT-IR) spectroscopy, and nuclear magnetic resonance (1H, 13C-NMR) spectroscopy. Additionally, their melting points, purity, molar conductivity, and magnetic susceptibility are determined. The impact of some prepared compounds and complexes on the growth of two antibiotic-resistant bacterial strains, namely the gram-negative Staphylococcus and the ram-positive Escherichia coli, is studied. Amoxicillin, is used as control antibiotic. Some of the synthesized compounds exhibited significant inhibitory activity against the tested bacterial strains.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular Docking Studies of Novel Benzimidazole Macromolecules 新型苯并咪唑大分子的分子对接研究

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400232

Nuaman F. Alheety, Bilal J. M. Aldahham, Noureddine Raouafi, Ahmed M. Mohammed, Mustafa A. Alheety, Rafaâ Besbes

引用次数: 0