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Influence of Pd and Rare Earth Metals Oxides (Ce, La) as Modifying Additives in the Co,Ni-Oxide Catalyst Compositions on the Process of Methane Oxidation Pd和稀土金属氧化物(Ce, La)作为Co, ni -氧化物催化剂组合物中改性剂对甲烷氧化过程的影响
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-02-15 DOI: 10.1007/s11237-023-09750-z
S. O. Soloviev, G. R. Kosmambetova, P. I. Kyriienko, D. E. Samoilenko, Y. P. Kurylets
{"title":"Influence of Pd and Rare Earth Metals Oxides (Ce, La) as Modifying Additives in the Co,Ni-Oxide Catalyst Compositions on the Process of Methane Oxidation","authors":"S. O. Soloviev,&nbsp;G. R. Kosmambetova,&nbsp;P. I. Kyriienko,&nbsp;D. E. Samoilenko,&nbsp;Y. P. Kurylets","doi":"10.1007/s11237-023-09750-z","DOIUrl":"10.1007/s11237-023-09750-z","url":null,"abstract":"<div><div><p>NiO-Al<sub>2</sub>O<sub>3</sub> and Co<sub>3</sub>O<sub>4</sub> oxide catalysts modified with palladium and oxides of rare earth metals (Ce and La) and formed on structured cordierite supports have been studied in the process of methane oxidation at different O<sub>2</sub>/CH<sub>4</sub> ratios. It is shown that methane oxidation proceeds without the formation of CO even at an O<sub>2</sub>/CH<sub>4</sub> ratio of &lt; 2 (in contrast to nickel-containing catalysts) in the presence of cobalt-containing catalysts modified with cerium and lanthanum oxides. The addition of CeO<sub>2</sub> promotes Co<sub>3</sub>O<sub>4</sub> dispersion, increases the number of oxygen vacancies, and prevents agglomeration of the active phase of the catalyst at high temperatures. The modification of Co<sub>3</sub>O<sub>4</sub>-CeO<sub>2</sub>/cordierite with palladium (0.1%) enhances its activity due to increased surface oxygen mobility as a result of the interphase interaction of palladium with cobalt oxides and ceria (according to the TPR-H<sub>2</sub> and XPS data).</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 5","pages":"342 - 349"},"PeriodicalIF":1.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4605709","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
Layered Double Hydroxides as Promising Adsorbents for Purification of Radioactive Polluted Water: A Review 层状双氢氧化物在放射性污水净化中的应用研究进展
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2022-12-19 DOI: 10.1007/s11237-022-09739-0
N. G. Kobylinska, L. M. Puzyrnaya, G. M. Pshinko
{"title":"Layered Double Hydroxides as Promising Adsorbents for Purification of Radioactive Polluted Water: A Review","authors":"N. G. Kobylinska,&nbsp;L. M. Puzyrnaya,&nbsp;G. M. Pshinko","doi":"10.1007/s11237-022-09739-0","DOIUrl":"10.1007/s11237-022-09739-0","url":null,"abstract":"<div><div><p>A critical review of the last decade’s literature on the synthesis, modification, and properties of layered double hydroxides (LDHs) regarding their use as sorbents for the removal of radionuclides from aquatic environments has been conducted. The evaluation of their adsorption capacity against U(VI), <sup>137</sup>Cs, <sup>90</sup>Sr, <sup>60</sup>Co, <sup>152+154</sup>Eu(III), and <sup>241</sup>Am has been performed on the basis of the analysis of the effect of the LDH preparation method, the nature of the metal ions in the material layers and compounds intercalated into their interlayer space. It is shown that magnetic composites of LDHs chelated forms have significant advantages for a practical use for the removal of both cationic and, especially, anionic forms of uranium(VI) from aquatic environments. Zn,Al-LDHs intercalated with the inorganic compounds, namely hexacyanoferrate(II) anions and copper(II) hexacyanoferrate, are found to be the most effective for the sorption extraction of <sup>137</sup>Cs and <sup>90</sup>Sr radionuclides.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 4","pages":"221 - 239"},"PeriodicalIF":1.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4744045","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: 2
Influence of the Structure and Composition of H3–2xMnxPMo12O40 AND (NH4)3–2xMnxPMo12O40 Heteropolycompounds on their Catalytic Properties in the Process of Cyclohexanone Oxidation with Hydrogen Peroxide H3-2xMnxPMo12O40 和 (NH4)3-2xMnxPMo12O40 杂多化合物的结构和组成对其在过氧化氢氧化环己酮过程中催化特性的影响
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2022-12-19 DOI: 10.1007/s11237-022-09745-2
A. Boumechhour, S. Benadji, T. Mazari, L. Dermeche, C. Rabia
{"title":"Influence of the Structure and Composition of H3–2xMnxPMo12O40 AND (NH4)3–2xMnxPMo12O40 Heteropolycompounds on their Catalytic Properties in the Process of Cyclohexanone Oxidation with Hydrogen Peroxide","authors":"A. Boumechhour,&nbsp;S. Benadji,&nbsp;T. Mazari,&nbsp;L. Dermeche,&nbsp;C. Rabia","doi":"10.1007/s11237-022-09745-2","DOIUrl":"10.1007/s11237-022-09745-2","url":null,"abstract":"<div><div><p>Catalytic properties of two series of Keggin-type heteropolycompounds, H<sub>3–2<i>x</i></sub>Mn<sub><i>x</i></sub>PMo<sub>12</sub>O<sub>40</sub> and (NH<sub>4</sub>)<sub>3–2<i>x</i></sub>Mn<sub><i>x</i></sub>PMo<sub>12</sub>O<sub>40</sub> (x = 0.25-1.5), have been studied in the process of oxidation of cyclohexanone and/or cyclohexanol to adipic acid, using 30% hydrogen peroxide, in the absence of organic solvent. The main products and by-products have been identified by means of GC-MS analysis. The highest yields of adipic acid are found in the case of H<sub>1.5</sub>Mn<sub>0.75</sub>PMo<sub>12</sub>O<sub>40</sub> and (NH<sub>4</sub>)<sub>2</sub>Mn<sub>0.5</sub>PMo<sub>12</sub>O<sub>40</sub> compounds.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 4","pages":"276 - 289"},"PeriodicalIF":1.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4747986","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
Luminescent and Photocatalytic Properties of Bulk and Crystalline Graphitic Carbon Nitride 块状和结晶型氮化石墨碳的发光和光催化性能
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2022-12-15 DOI: 10.1007/s11237-022-09740-7
T. R. Stara, S. Ya. Kuchmiy
{"title":"Luminescent and Photocatalytic Properties of Bulk and Crystalline Graphitic Carbon Nitride","authors":"T. R. Stara,&nbsp;S. Ya. Kuchmiy","doi":"10.1007/s11237-022-09740-7","DOIUrl":"10.1007/s11237-022-09740-7","url":null,"abstract":"<div><div><p>The photoluminescence of bulk graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>), crystalline carbon nitride (CGCN) obtained by thermal treatment of g-C<sub>3</sub>N<sub>4</sub> in LiCl and KCl melts, and CGCN treated with a lactic acid solution (AT-CGCN) has been studied. It has been established that the luminescent properties largely depend on their morphology and the presence of impurities as well as structural defects. It is shown that there is an antibatic dependence between the luminescence intensity and the photocatalytic activity of the samples in the ethanol oxidation reaction.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 4","pages":"240 - 246"},"PeriodicalIF":1.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4604073","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
Influence of Acid–Base Properties of MFe2O4 Ferrites (M(II) = Fe, Mg, Mn, Zn) on Their Selectivity in the Conversion of Ethanol to Acetone MFe2O4铁氧体(M(II) = Fe, Mg, Mn, Zn)的酸碱性质对乙醇转化为丙酮选择性的影响
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2022-12-15 DOI: 10.1007/s11237-022-09746-1
L. Yu. Dolgikh, I. L. Stolyarchuk, L. O. Stara, L. M. Senchylo, Y. I. Pyatnitsky
{"title":"Influence of Acid–Base Properties of MFe2O4 Ferrites (M(II) = Fe, Mg, Mn, Zn) on Their Selectivity in the Conversion of Ethanol to Acetone","authors":"L. Yu. Dolgikh,&nbsp;I. L. Stolyarchuk,&nbsp;L. O. Stara,&nbsp;L. M. Senchylo,&nbsp;Y. I. Pyatnitsky","doi":"10.1007/s11237-022-09746-1","DOIUrl":"10.1007/s11237-022-09746-1","url":null,"abstract":"<div><div><p>The acidity and basicity of MFe<sub>2</sub>O<sub>4</sub> (M(II) = Fe, Mg, Mn, Zn) ferrites of the spinel structure have been characterized by temperature-programmed desorption of NH<sub>3</sub> and CO<sub>2</sub>. It is shown that both medium-strength basic and acid sites play an important role in the process of acetone obtaining from ethanol over ferrites. The selectivity of ethanol conversion to acetone depends both on the acid–base properties of the surface and on the ability of the surface oxygen of ferrite to participate in the intermediate redox stages of formation and steam reforming of acetone.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 4","pages":"290 - 296"},"PeriodicalIF":1.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4605156","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
Nanosized Pd/SnO2 Materials for Semiconductor Hydrogen Sensors 半导体氢传感器用纳米Pd/SnO2材料
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2022-12-14 DOI: 10.1007/s11237-022-09741-6
N. P. Maksymovych, G. V. Fedorenko, L. P. Oleksenko
{"title":"Nanosized Pd/SnO2 Materials for Semiconductor Hydrogen Sensors","authors":"N. P. Maksymovych,&nbsp;G. V. Fedorenko,&nbsp;L. P. Oleksenko","doi":"10.1007/s11237-022-09741-6","DOIUrl":"10.1007/s11237-022-09741-6","url":null,"abstract":"<div><div><p>To create highly sensitive semiconductor hydrogen sensors, nanosized tin dioxides with particle sizes of 5-6 and 10-11 nm have been obtained by the sol-gel method using various precursors, as well as Pd-doped materials on their base. The maximum sensitivity to the hydrogen microconcentrations has been found for the sensors based on the nanosized ex-oxalate SnO<sub>2</sub> containing 0.24% palladium. High sensitivity of the obtained semiconductor sensors is explained by the significant influence of surface processes on their electrical resistance due to the smallest sizes of the SnO<sub>2</sub> particles.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 4","pages":"247 - 253"},"PeriodicalIF":1.0,"publicationDate":"2022-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4564730","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
Influence of the Nature of Amino Acids on the Formation of Supramolecular Complexes with Calixarenemethylene-bis-Phosphonic Acid 氨基酸性质对杯芳烃亚甲基-双膦酸形成超分子配合物的影响
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2022-12-14 DOI: 10.1007/s11237-022-09742-5
O. I. Kalchenko, S. O. Cherenok, O. M. Silenko, V. I. Kalchenko
{"title":"Influence of the Nature of Amino Acids on the Formation of Supramolecular Complexes with Calixarenemethylene-bis-Phosphonic Acid","authors":"O. I. Kalchenko,&nbsp;S. O. Cherenok,&nbsp;O. M. Silenko,&nbsp;V. I. Kalchenko","doi":"10.1007/s11237-022-09742-5","DOIUrl":"10.1007/s11237-022-09742-5","url":null,"abstract":"<div><div><p>The formation of supramolecular complexes of 3-methyl-sulfido-propoxycalix[4]arene-methylene-<i>bis</i>-phosphonic acid with seventeen amino acids in aqueous solutions has been studied and their stability coefficients have been determined by the method of high-performance liquid chromatography. The structures of the supramolecular complexes have been proposed by molecular modeling and the influence of structural factors (the stabilization of different conformations of the obtained complexes depending on amino acid nature: possibilities of the realization of hydrogen bonds and electrostatic interactions between different groups of the amino acids and calixarene) on the stability of the supramolecules has been shown.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 4","pages":"254 - 260"},"PeriodicalIF":1.0,"publicationDate":"2022-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4566502","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
Nanodispersed VOx/SiO2 Catalysts of Partial Oxidation of Paraffin Hydrocarbons 纳米分散VOx/SiO2催化剂对石蜡烃部分氧化的影响
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2022-12-14 DOI: 10.1007/s11237-022-09743-4
V. O. Zazhigalov, S. B. Grinenko, I. V. Bacherikova, O. A. Diyuk
{"title":"Nanodispersed VOx/SiO2 Catalysts of Partial Oxidation of Paraffin Hydrocarbons","authors":"V. O. Zazhigalov,&nbsp;S. B. Grinenko,&nbsp;I. V. Bacherikova,&nbsp;O. A. Diyuk","doi":"10.1007/s11237-022-09743-4","DOIUrl":"10.1007/s11237-022-09743-4","url":null,"abstract":"<div><div><p>VO<sub>x</sub>/SiO<sub>2</sub> with different V/Si atomic ratios have been synthesized by hydrothermal method from alkoxides of vanadium and silicon compounds. The prepared samples are characterized by high specific surface area (300-700 m<sup>2</sup>/g), uniform nanodispersed distribution of vanadia in silica matrix, the absence of crystalline phases, and the absence of the band typical for V=O bond in the Raman spectra. High activity and selectivity of the synthesized catalysts in oxidation of methane to formaldehyde, oxy-dehydrogenation of propane and n-butane have been established.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 4","pages":"261 - 268"},"PeriodicalIF":1.0,"publicationDate":"2022-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4566503","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
Superacid L-Sites on the Surface of Ternary ZrO2-SiO2-Al2O3 and ZrO2-SiO2-SnO2 Oxides ZrO2-SiO2-Al2O3和ZrO2-SiO2-SnO2三元氧化物表面的超酸性l -位
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2022-12-14 DOI: 10.1007/s11237-022-09744-3
O. I. Inshyna, S. V. Prudius, V. V. Brei
{"title":"Superacid L-Sites on the Surface of Ternary ZrO2-SiO2-Al2O3 and ZrO2-SiO2-SnO2 Oxides","authors":"O. I. Inshyna,&nbsp;S. V. Prudius,&nbsp;V. V. Brei","doi":"10.1007/s11237-022-09744-3","DOIUrl":"10.1007/s11237-022-09744-3","url":null,"abstract":"<div><div><p>Superacid (H<sub>0</sub> ≥ –14.52) ternary Zr<sub>35</sub>Si<sub>53</sub>Al<sub>12</sub> and Zr<sub>21</sub>Si<sub>67</sub>Sn<sub>11</sub> oxides have been studied by X-ray photoelectron spectroscopy. The high-energy shifts of Zr3d levels indicate the electron density shift from zirconium to silicon atoms, which is facilitated by the presence of tetrahedrally coordinated Al<sup>3+</sup> and Sn<sup>4+</sup> ions in Zr<sup>4+</sup> environment. Models of the superacid L-sites that include coordinatively unsaturated zirconium ions are proposed.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 4","pages":"269 - 275"},"PeriodicalIF":1.0,"publicationDate":"2022-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4564714","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
2D Metal Carbides as Components of Photocatalytic Systems for Hydrogen Production: A Review 二维金属碳化物光催化制氢系统的研究进展
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2022-10-12 DOI: 10.1007/s11237-022-09733-6
S. Ya. Kuchmiy, V. V. Shvalagin
{"title":"2D Metal Carbides as Components of Photocatalytic Systems for Hydrogen Production: A Review","authors":"S. Ya. Kuchmiy,&nbsp;V. V. Shvalagin","doi":"10.1007/s11237-022-09733-6","DOIUrl":"10.1007/s11237-022-09733-6","url":null,"abstract":"<div><div><p>The current state of research on photocatalytic systems for hydrogen production by metal carbides is considered. Approaches for obtaining of known and latest two-dimensional metal carbides (MXenes) and their composites with the participation of photoactive semiconductors or organic dyes are described. Properties of these materials such as photocatalysts, and precursors used in their obtaining or co-catalysts used in hydrogen production systems where metal carbides act as acceptors and carriers of photogenerated charges or catalysts of the hydrogen evolution reaction are analyzed. The most promising areas of further research are outlined.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 3","pages":"151 - 180"},"PeriodicalIF":1.0,"publicationDate":"2022-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4512263","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
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