The A n− /CoAl LDH_ x precursors with various interlayer anions (A n− ) and Co 2+ to Al 3+ ratios ( x ) were successfully synthesized using the co-precipitation method under alkaline conditions. The XRD profiles of the as-prepared A n− /CoAl LDH_ x resembles the typical pattern of hydrotalcite materials without any presence of impurities. The TG-DTA analysis revealed that different types of interlayer anions led to the formation of LDH with different thermal behavior. The cobalt aluminum oxide nanocomposite, A n− /CoAl_ x _ T , was obtained after calcination of A n− /CoAl LDH_ x at T K for 2 h, and it was applied as a heterogeneous catalyst for aerobic oxidation of 1-phenyl ethanol to acetophenone using molecular oxygen as a sole oxidant. The A n− /CoAl_ x _ T acted as efficient catalyst for aerobic oxidation of 1-phenyl ethanol. Among The A n− /CoAl_ x _ T catalysts tested, CO 32− /CoAl_3_573 gave the most outstanding catalytic performance with the acetophenone yield of 89%. Another report shows that a highly reducible CuO could
{"title":"Development of Cobalt Oxide Nanocomposite Catalyst from Cobalt Aluminum Layered Double Hydroxide Precursor Towards Aerobic Alcohol Oxidation","authors":"Febi Yusniyanti, Takayoshi Hara, N. Ichikuni","doi":"10.5182/jaie.33.105","DOIUrl":"https://doi.org/10.5182/jaie.33.105","url":null,"abstract":"The A n− /CoAl LDH_ x precursors with various interlayer anions (A n− ) and Co 2+ to Al 3+ ratios ( x ) were successfully synthesized using the co-precipitation method under alkaline conditions. The XRD profiles of the as-prepared A n− /CoAl LDH_ x resembles the typical pattern of hydrotalcite materials without any presence of impurities. The TG-DTA analysis revealed that different types of interlayer anions led to the formation of LDH with different thermal behavior. The cobalt aluminum oxide nanocomposite, A n− /CoAl_ x _ T , was obtained after calcination of A n− /CoAl LDH_ x at T K for 2 h, and it was applied as a heterogeneous catalyst for aerobic oxidation of 1-phenyl ethanol to acetophenone using molecular oxygen as a sole oxidant. The A n− /CoAl_ x _ T acted as efficient catalyst for aerobic oxidation of 1-phenyl ethanol. Among The A n− /CoAl_ x _ T catalysts tested, CO 32− /CoAl_3_573 gave the most outstanding catalytic performance with the acetophenone yield of 89%. Another report shows that a highly reducible CuO could","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87535677","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}
{"title":"Development of UPW Production Technology","authors":"Hiroshi Kimoto, Yukio Noguchi, Masamitsu Iiyama","doi":"10.5182/jaie.33.56","DOIUrl":"https://doi.org/10.5182/jaie.33.56","url":null,"abstract":"","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78416857","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}
. All chemical reagents used in this study such as common metal chlorides, 1,3,5-triformylphloroglucinol (Tp), and p -phenylenediamine (Pa-1) were directly purchased from Kanto Chemical Co., Inc. or FUJIFILM Wako Pure Chemical Corporation and were of analytic grade. A 50 mM of stock solution of Pd(II) were prepared by dissolving the powder in a 2 M hydrochloric acid and then diluting the solution to the required concentration using deionized water. Subsequently, 0.05 g of TpPa-1 was weighed in a 9 mL vial bottle with a screw cap and 3 mL of the prepared working solution was added. The mixture was mechanically stirred at 298 K for an exact time interval. Phase separation was conducted by using a plastic syringe and nylon net filter (20–40 µm pores). The concentration of the tested metal ions before and after adsorption were determined using an inductively coupled plasma atomic emission spectrometer (ICP-AES, Shimazu ICPS-7510). The uptake percentage ( R , Abstract In this study, a hydrochloric acid-stable 2D covalent organic framework (TpPa-1) was prepared. And its adsorption behaviors in the recovery of palladium (Pd(II)) from hydrochloric acid solution was systematically investigated under the effect of contact time, hydrochloric acid concentration, chloride ions concentration, and adsorption capacity. The adsorbed species on TpPa-1 was clarified as chloridated Pd(II) by X-ray photoelectron spectroscopy.
． 本研究使用的所有化学试剂，如普通金属氯化物、1,3,5-三甲基间苯三酚(Tp)和对苯二胺(Pa-1)，均直接从关东化学公司或富士Wako纯化学公司购买，均为分析级。将粉末溶解于2 M盐酸中，用去离子水稀释至所需浓度，制得50 mM的Pd(II)原液。随后，将0.05 g TpPa-1称重于9ml带螺旋盖的小瓶中，加入3ml制备好的工作溶液。将混合物在298 K下机械搅拌一段精确的时间间隔。采用塑料注射器和尼龙网过滤器(20-40µm孔)进行相分离。采用电感耦合等离子体原子发射光谱仪(ICP-AES, Shimazu ICPS-7510)测定吸附前后被测金属离子的浓度。摘要本研究制备了一种具有盐酸稳定性的二维共价有机骨架(TpPa-1)。在接触时间、盐酸浓度、氯离子浓度、吸附量等因素的影响下，系统地研究了其在盐酸溶液中回收钯(Pd(II))的吸附行为。x射线光电子能谱分析表明，tpa -1吸附的物质为氯化Pd(II)。
{"title":"Adsorption Behaviors of a 2D Covalent Organic Framework Toward Pd(II) in Hydrochloric Acid Solution","authors":"Hao Wu, Seongyun Kim","doi":"10.5182/jaie.33.32","DOIUrl":"https://doi.org/10.5182/jaie.33.32","url":null,"abstract":". All chemical reagents used in this study such as common metal chlorides, 1,3,5-triformylphloroglucinol (Tp), and p -phenylenediamine (Pa-1) were directly purchased from Kanto Chemical Co., Inc. or FUJIFILM Wako Pure Chemical Corporation and were of analytic grade. A 50 mM of stock solution of Pd(II) were prepared by dissolving the powder in a 2 M hydrochloric acid and then diluting the solution to the required concentration using deionized water. Subsequently, 0.05 g of TpPa-1 was weighed in a 9 mL vial bottle with a screw cap and 3 mL of the prepared working solution was added. The mixture was mechanically stirred at 298 K for an exact time interval. Phase separation was conducted by using a plastic syringe and nylon net filter (20–40 µm pores). The concentration of the tested metal ions before and after adsorption were determined using an inductively coupled plasma atomic emission spectrometer (ICP-AES, Shimazu ICPS-7510). The uptake percentage ( R , Abstract In this study, a hydrochloric acid-stable 2D covalent organic framework (TpPa-1) was prepared. And its adsorption behaviors in the recovery of palladium (Pd(II)) from hydrochloric acid solution was systematically investigated under the effect of contact time, hydrochloric acid concentration, chloride ions concentration, and adsorption capacity. The adsorbed species on TpPa-1 was clarified as chloridated Pd(II) by X-ray photoelectron spectroscopy.","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"102 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90201843","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}
{"title":"Application of Monolithic Ion Exchange resins for the field of Ultrapure Water","authors":"Kyohei Tsutano","doi":"10.5182/jaie.33.51","DOIUrl":"https://doi.org/10.5182/jaie.33.51","url":null,"abstract":"","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84045943","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}
K. Mori, T. Shinohara, H. Mimura, Taiji Chida, Y. Niibori
Simulated spent adsorbent with Sr adsorbed on granular potassium dititanate was prepared and its leaching behavior was evaluated. Since Sr was adsorbed on the granular potassium dititanate by ion-exchange, Sr was leached into acidic solutions or solutions with high cation concentration. The influence of the cationic species in the solution on Sr leachability was larger for Ca than for Na. It can be seen the ion selectivity of potassium dititanate is higher for alkaline earth metals such as Ca and Sr than for alkali metals such as Na and K. Heat treatment was effective in reducing Sr leaching from the simulated spent adsorbent. The heat treatment at 500°C was not effective enough to reduce the Sr leaching, but the heat treatment above 900°C showed a significant reduction in the Sr leaching ratio. This might be related to the stabilization of Sr as Sr 2 Ti O 13 crystal and the reduction of specific surface area of the simulated spent adsorbent. At the heat treatment temperature of 1100°C, there was no significant difference in the crystal phase formed from that at 900°C. However, the specific surface area of the simulated spent adsorbent was reduced, therefore the effect of reducing Sr leaching was even larger.
{"title":"Leaching behavior of adsorbed Sr from granular potassium dititanate and its inhibition effect by heat treatment","authors":"K. Mori, T. Shinohara, H. Mimura, Taiji Chida, Y. Niibori","doi":"10.5182/jaie.33.17","DOIUrl":"https://doi.org/10.5182/jaie.33.17","url":null,"abstract":"Simulated spent adsorbent with Sr adsorbed on granular potassium dititanate was prepared and its leaching behavior was evaluated. Since Sr was adsorbed on the granular potassium dititanate by ion-exchange, Sr was leached into acidic solutions or solutions with high cation concentration. The influence of the cationic species in the solution on Sr leachability was larger for Ca than for Na. It can be seen the ion selectivity of potassium dititanate is higher for alkaline earth metals such as Ca and Sr than for alkali metals such as Na and K. Heat treatment was effective in reducing Sr leaching from the simulated spent adsorbent. The heat treatment at 500°C was not effective enough to reduce the Sr leaching, but the heat treatment above 900°C showed a significant reduction in the Sr leaching ratio. This might be related to the stabilization of Sr as Sr 2 Ti O 13 crystal and the reduction of specific surface area of the simulated spent adsorbent. At the heat treatment temperature of 1100°C, there was no significant difference in the crystal phase formed from that at 900°C. However, the specific surface area of the simulated spent adsorbent was reduced, therefore the effect of reducing Sr leaching was even larger.","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"434 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91488375","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}
Alkali conversion of paper sludge ash into cation exchanger via acid leaching was examined. The extraction behaviors of major elements (Si, Al, Ca and Mg) from the ash into hydrochloric acid (1 mol/L HCl) and sulfuric acid (0.5 mol/L H2SO4) aqueous solutions were almost same except Ca due to the formation of gypsum in the H2SO4 solution. The ashes leached with 1 mol/L HCl and 0.5 mol/L H2SO4 aqueous solutions were converted into zeolite-P and tobermorite, respectively, while the raw ash was converted into hydroxysodalite. The cation exchange capacities of the converted products from the ashes leached with HCl and H2SO4 were 1.30 and 0.75 mmol/g, respectively, which were higher than that of the product from the raw ash (0.60 mmol/g). These results indicated that paper sludge ash could be converted into different types of cation exchanger via acid leaching.
{"title":"Chemical Conversion of Paper Sludge Ash into Cation Exchanger Via Acid Leaching","authors":"T. Wajima","doi":"10.5182/jaie.33.27","DOIUrl":"https://doi.org/10.5182/jaie.33.27","url":null,"abstract":"Alkali conversion of paper sludge ash into cation exchanger via acid leaching was examined. The extraction behaviors of major elements (Si, Al, Ca and Mg) from the ash into hydrochloric acid (1 mol/L HCl) and sulfuric acid (0.5 mol/L H2SO4) aqueous solutions were almost same except Ca due to the formation of gypsum in the H2SO4 solution. The ashes leached with 1 mol/L HCl and 0.5 mol/L H2SO4 aqueous solutions were converted into zeolite-P and tobermorite, respectively, while the raw ash was converted into hydroxysodalite. The cation exchange capacities of the converted products from the ashes leached with HCl and H2SO4 were 1.30 and 0.75 mmol/g, respectively, which were higher than that of the product from the raw ash (0.60 mmol/g). These results indicated that paper sludge ash could be converted into different types of cation exchanger via acid leaching.","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84261882","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}
{"title":"37 years with Japan Society of Ion Exchange","authors":"N. Kumada","doi":"10.5182/jaie.33.45","DOIUrl":"https://doi.org/10.5182/jaie.33.45","url":null,"abstract":"","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"89 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75417914","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}
{"title":"Elution Behavior of Carbohydrates for Core-Shell Ion-Exchange Resin St-50 with Different Degrees of Cross-Linking in the Porous Shell","authors":"S. Mitomo, Y. Negishi, T. Mutai, Y. Inoue","doi":"10.5182/jaie.33.62","DOIUrl":"https://doi.org/10.5182/jaie.33.62","url":null,"abstract":"","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91294922","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}
{"title":"Development of Ion Exchange and Molecular Recognition System Showing Molecular Selectivity Based on Multipoint Recognition","authors":"Yuji Tsuchido","doi":"10.5182/jaie.33.37","DOIUrl":"https://doi.org/10.5182/jaie.33.37","url":null,"abstract":"","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87326235","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}
By use of anion-exchangeable ability of layered Ni-Zn hydroxy double salt (NiZn), unstable anionic transition metal complexes such as [Pd(OH) 4 ] 2− , [(D-val)Pd(OH) 2 ] − , or [Rh(OH) 6 ] 3− are able to be intercalated into NiZn interlayer under mild reaction conditions. Catalytically active species in interlayer are stabilized by the strong electrostatic interaction between the NiZn host and the guest anion. Furthermore, Brønsted basic anions such as PO 43− or OH − were also able to be integrated into NiZn interlayer. These “intercalation catalysts” promote various liquid phase reactions more effectively. The CuO-CuAl 2 O 4 nanocomposite synthesized by high temperature calcination (1073 K) of Cu-Al layered double hydroxide (CuAl LDH) acted as an effective heterogeneous catalyst for selective hydrogenation of carbonyl compounds with formic acid as a hydrogen donor and acceptorless dehydrogenation of various alcohols. The catalytically active Cu 0 species was formed by in situ reduction. The catalytic activity strongly depended on the Cu/Al ratio in preparation.
{"title":"Creation of “Intercalation Catalysts” by Use of Anion Exchangeable Layered Inorganic Hydroxides","authors":"Takayoshi Hara","doi":"10.5182/jaie.33.1","DOIUrl":"https://doi.org/10.5182/jaie.33.1","url":null,"abstract":"By use of anion-exchangeable ability of layered Ni-Zn hydroxy double salt (NiZn), unstable anionic transition metal complexes such as [Pd(OH) 4 ] 2− , [(D-val)Pd(OH) 2 ] − , or [Rh(OH) 6 ] 3− are able to be intercalated into NiZn interlayer under mild reaction conditions. Catalytically active species in interlayer are stabilized by the strong electrostatic interaction between the NiZn host and the guest anion. Furthermore, Brønsted basic anions such as PO 43− or OH − were also able to be integrated into NiZn interlayer. These “intercalation catalysts” promote various liquid phase reactions more effectively. The CuO-CuAl 2 O 4 nanocomposite synthesized by high temperature calcination (1073 K) of Cu-Al layered double hydroxide (CuAl LDH) acted as an effective heterogeneous catalyst for selective hydrogenation of carbonyl compounds with formic acid as a hydrogen donor and acceptorless dehydrogenation of various alcohols. The catalytically active Cu 0 species was formed by in situ reduction. The catalytic activity strongly depended on the Cu/Al ratio in preparation.","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89397256","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}
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