Research on Chemical Intermediates最新文献_第10页

Oxide-modified HZSM-5 for efficient production of hydrogen via steam reforming of dimethyl ether 通过二甲醚蒸汽转化高效制氢的氧化物改性 HZSM-5

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-05-22 DOI: 10.1007/s11164-024-05313-6

Sen-Han Zhang, Yong‑Hua Zhao, Jia-Kang Zhang, Xiao-Qian Feng, Qijian Zhang, Huan Wang

引用次数: 0

Removal of beryllium (Be2+) from aqueous solution by 5-sulfosalicylic acid-loaded anion-exchange resin 用负载 5-磺基水杨酸的阴离子交换树脂从水溶液中去除铍 (Be2+)

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-05-21 DOI: 10.1007/s11164-024-05299-1

Ozan Ali Dündar, Ö. Arar

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Non-oxidative ethane dehydrogenation reaction over molybdenum and chromium incorporated MgO encapsulated carbon-core catalysts in microwave reactor 微波反应器中掺入钼和铬的氧化镁包封碳核催化剂的非氧化乙烷脱氢反应

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-05-21 DOI: 10.1007/s11164-024-05309-2

Birce Pekmezci Karaman, Emine Kaya Ekinci

引用次数: 0

Cu(II) salen complex grafted onto KCC-1 as a convenient multifunctional heterogeneous catalyst for the preparation of 4H-benzochromenes 接枝到 KCC-1 上的 Cu(II) salen 复合物是制备 4H 苯并二氢吡喃的便捷多功能异相催化剂

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-05-20 DOI: 10.1007/s11164-024-05311-8

Khadijeh Ghabdian, A. Motavalizadehkakhky, R. Zhiani, A. Allahresani, Mahdieh Ghabdian

引用次数: 0

9-mesityl-10-methylacridinium perchlorate (Mes-Acr-Me+ClO4−) as a novel metal-free donor–acceptor (D–A) photocatalyst: visible-light-induced access to tetrahydrobenzo[b]pyran scaffolds through a single-electron transfer (SET) pathway 作为新型无金属供体-受体（D-A）光催化剂的 9-甲脒基-10-甲基吖啶高氯酸盐（Mes-Acr-Me+ClO4-）：通过单电子转移（SET）途径在可见光诱导下获得四氢苯并[b]吡喃支架

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-05-20 DOI: 10.1007/s11164-024-05304-7

F. Mohamadpour, Hesam Kamyab, Shreeshivadasan Chelliapan, A. Amani

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Preparation of biodiesel catalyzed by immobilized lipase in magnetic ZIF-8 nanomaterial 在磁性 ZIF-8 纳米材料中固定脂肪酶催化制备生物柴油

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-05-18 DOI: 10.1007/s11164-024-05306-5

Xiaohong Hao, Xiangsheng Zheng, Qi Zhang, Xiongzhi Da, Yan Wang

{"title":"Preparation of biodiesel catalyzed by immobilized lipase in magnetic ZIF-8 nanomaterial","authors":"Xiaohong Hao, Xiangsheng Zheng, Qi Zhang, Xiongzhi Da, Yan Wang","doi":"10.1007/s11164-024-05306-5","DOIUrl":"https://doi.org/10.1007/s11164-024-05306-5","url":null,"abstract":"The main objective of this study was to produce biodiesel utilizing Fe3O4@ZIF-8-CRL as biocatalyst, employing high acid value waste oil. Candida Rugosa lipase (CRL) was immobilized onto a magnetic ZIF-8 organometallic framework through physical adsorption, resulting in significantly enhanced stability and chemical compatibility. The study extensively investigated the impacts of enzyme dosage, alcohol-to-oil ratio, ultrasonic power, temperature, time, and the addition of deep eutectic solvents on the conversion of fatty acid ethyl esters. The findings revealed that under the conditions of biocatalyst addition of 5.7 wt.%, alcohol–oil ratio of 6:1 mmol/g, ultrasonic power of 87.297 W, reaction temperature of 40 °C, and reaction time of 2 h, the innovative biocatalyst facilitated a conversion efficiency of fatty acid ethyl esters reaching 82.06 ± 1.63%, with a retention rate of 74.52% after three cycles. Additionally, characterization of the biocatalyst using a vibrating sample magnetometer and scanning electron microscopy demonstrated its favorable magnetic recovery potential and morphology. Coupled with its straightforward and efficient synthesis, this biocatalyst proves to be competitive in the catalysis of biodiesel preparation.","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141059362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Construction of palladium complex supported on magnetic nanoparticles as an efficient recoverable nanocatalyst for synthesis of flavones through carbonylative annulation 构建磁性纳米颗粒支撑的钯复合物，作为通过羰基环化合成黄酮的高效可回收纳米催化剂

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-05-17 DOI: 10.1007/s11164-024-05300-x

Ruoang Wang, Haiying Wan

引用次数: 0

Nano-SiO2@nPr@DPyE-Ni: a novel nanocatalyst for the rapid production of symmetric di-aryl sulfides and pyrazolones 纳米二氧化硅@nPr@DPyE-Ni：快速生产对称二芳基硫化物和吡唑酮的新型纳米催化剂

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-05-17 DOI: 10.1007/s11164-024-05296-4

H. Almohamadi, Carlos Rodriguez-Benites, Pooja Bansal, Ahmed Huseen Redhee, D. Bokov, A. Al‐Rubaye, M. T. Qasim, Abhinav Kumar, Yasser Fakri Mustafa, Maryam Sadat Ghorayshi Nejad

引用次数: 0

Synthesis of highly effective CuO–FeSe2 composites for the photodegradation of RhB under visible light 在可见光下合成用于光降解 RhB 的高效 CuO-FeSe2 复合材料

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-05-14 DOI: 10.1007/s11164-024-05286-6

Furqan Ahmad, Rafaqat Hussain, Sibghat Ullah Khan, A. Shah, Mohamed Fahad Alajmi, Muhammad Arif, Afzal Hussain, Iqra Parveen, Shams ur Rahman

{"title":"Synthesis of highly effective CuO–FeSe2 composites for the photodegradation of RhB under visible light","authors":"Furqan Ahmad, Rafaqat Hussain, Sibghat Ullah Khan, A. Shah, Mohamed Fahad Alajmi, Muhammad Arif, Afzal Hussain, Iqra Parveen, Shams ur Rahman","doi":"10.1007/s11164-024-05286-6","DOIUrl":"https://doi.org/10.1007/s11164-024-05286-6","url":null,"abstract":"The release of industrial effluents into fresh water is a major contributor of water contamination. Therefore, it is highly desirable to develop a viable solution to this alarming issue to improve the quality of clean water. To enhance the photocatalytic efficiency and hence utilization ratio of CuO, a series of CuO–FeSe2 composites with different varying contents of FeSe2 were prepared through facile synthetic methods. X-ray diffraction (XRD) and energy-dispersive X-rays (EDX) analysis verified that the samples were successfully prepared without any contaminating phases. The average crystallite sizes of CuO and FeSe2 were computed to be 29 and 21 nm respectively. For the CuO–FeSe2 composites, the crystallite sizes varied between 25 and 27 nm. The morphology of CuO was comprised of needle-shaped structures, whereas that of FeSe2 was observed to be flower-shaped structures comprising of irregular crystals. A red shift in the bandgap of CuO–FeSe2 composites was observed with the increase in FeSe2 concentration. The prepared photocatalysts were utilized to evaluate their efficiency under visible light against Rhodamine B (RhB). Among all the prepared composites, CuO–75% FeSe2 revealed a remarkable performance and degraded 96% RhB in 180 min. Rate constants for the degradation of the dye were determined by applying the Langmuir–Hinshelwood model.","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140937543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Synthesis and characterization of Cu-modified ox-g-C3N4 nanosheets as an electrode for green synthesis of phenyl Benzofuran derivatives via C–H functionalization to C–O and C–C bond formation with an electrochemical oxidation system 通过 C-H 功能化到 C-O 和 C-C 键形成的电化学氧化系统，合成并表征作为电极的 Cu 改性 ox-g-C3N4 纳米片，用于绿色合成苯基苯并呋喃衍生物

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-05-14 DOI: 10.1007/s11164-024-05295-5

Zaman Abdalhussein Ibadi Alaridhee, Dheyaa J. Jasim, Ikromjon Mamadoliyev, Moayad Jasim Mohammed, Abdul-Jabbar A. Ali, Ayat H. Athab, Salim S. Al-Rejaie, Mohamed Mohany, Majid Jabir, Hasan Majdi, Nadhir N. A. Jafar, Durgesh Singh, Kamini Singh

{"title":"Synthesis and characterization of Cu-modified ox-g-C3N4 nanosheets as an electrode for green synthesis of phenyl Benzofuran derivatives via C–H functionalization to C–O and C–C bond formation with an electrochemical oxidation system","authors":"Zaman Abdalhussein Ibadi Alaridhee, Dheyaa J. Jasim, Ikromjon Mamadoliyev, Moayad Jasim Mohammed, Abdul-Jabbar A. Ali, Ayat H. Athab, Salim S. Al-Rejaie, Mohamed Mohany, Majid Jabir, Hasan Majdi, Nadhir N. A. Jafar, Durgesh Singh, Kamini Singh","doi":"10.1007/s11164-024-05295-5","DOIUrl":"https://doi.org/10.1007/s11164-024-05295-5","url":null,"abstract":"In this study, our primary objective was to synthesize and characterize a copper nanoparticle-modified oxidized graphite carbon nitride (ox-g-C3N4). This modified ox-g-C3N4 material was utilized as a reusable catalyst for the environmentally friendly production of benzofuran 4(a-j) derivatives through C–H activation using an electrochemical oxidation system. The desired derivatives were obtained by reacting 2-bromophenol 1(a-c) with ethynylbenzene 2(a-g) yielding high yields ranging from 89 to 94%. The modified Cu/ox-g-C3N4 nanocomposite was thoroughly examined. using different analytical techniques, including thermogravimetric analysis (TGA), energy-dispersive X-ray spectroscopy (EDS), scanning electron microscopy (SEM), IR Fourier-transform infrared spectroscopy (FT-IR), Brunauer–Emmett–Teller (BET) analysis, cyclic voltammetry (CV), and X-ray diffraction (XRD) spectroscopy, and ultraviolet (UV) spectroscopy. The comprehensive identification was conducted in a comparative manner, allowing for a thorough understanding of the nanocomposite's properties. By employing this nanocatalyst, we implement a greener synthesis approach that reduces the need for dangerous and toxic substances, while reducing waste generation by promoting reuse. The synthesized products in this research were subjected to characterization utilizing techniques such as melting point analysis, CHN analysis and 1HNMR spectroscopy. These analytical methods were utilized to confirm the identification and assess the purity of the benzofuran compounds synthesized 4(a-j).","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140937593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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