Pub Date : 2009-06-10DOI: 10.20731/ZEORAITO.26.2.65
S. Inagaki, 稲垣怜史, Y. Oumi, 近江靖則
{"title":"Verified Synthesis of Zeolitic Materials（Synthesis Commission of IZA）の紹介","authors":"S. Inagaki, 稲垣怜史, Y. Oumi, 近江靖則","doi":"10.20731/ZEORAITO.26.2.65","DOIUrl":"https://doi.org/10.20731/ZEORAITO.26.2.65","url":null,"abstract":"","PeriodicalId":23983,"journal":{"name":"Zeolites","volume":"115 1","pages":"65-71"},"PeriodicalIF":0.0,"publicationDate":"2009-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78990533","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}
The adsorption of copper valerate, compared with copper nitrate, on HZSM-5 and γ-Al2O3 was studied using IR and inductively coupled plasma (ICP). The surface area and pore structure of HZSM-5 and γ-Al2O3 was measured with nitrogen physical adsorption. Results indicated a chemical adsorption of copper valerate occurred on the surface of γ-Al2O3 and external surface of HZSM-5. The =(COO)2Cu was the adsorbing group. There even existed a chemical reaction, which resulted in the formation of valeric acid.
{"title":"Adsorption of copper valerate on zeolite H-ZSM-5 and γ-Al2O3","authors":"Zeshan Hu, Junxiu Dong, Wei Li, Songying Chen, Shaoyi Peng","doi":"10.1016/S0144-2449(97)00104-8","DOIUrl":"10.1016/S0144-2449(97)00104-8","url":null,"abstract":"<div><p>The adsorption of copper valerate, compared with copper nitrate, on HZSM-5 and γ-Al<sub>2</sub>O<sub>3</sub> was studied using IR and inductively coupled plasma (ICP). The surface area and pore structure of HZSM-5 and γ-Al<sub>2</sub>O<sub>3</sub> was measured with nitrogen physical adsorption. Results indicated a chemical adsorption of copper valerate occurred on the surface of γ-Al<sub>2</sub>O<sub>3</sub> and external surface of HZSM-5. The =(COO)<sub>2</sub>Cu was the adsorbing group. There even existed a chemical reaction, which resulted in the formation of valeric acid.</p></div>","PeriodicalId":23983,"journal":{"name":"Zeolites","volume":"19 5","pages":"Pages 425-428"},"PeriodicalIF":0.0,"publicationDate":"1997-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0144-2449(97)00104-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78274178","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}
Pub Date : 1997-11-01DOI: 10.1016/S0144-2449(97)00121-8
S.L. Jahn, P.A.P. Nascente, D. Cardoso
Crystallization curves of [Ti,Al]-Beta were obtained from reaction mixtures having Si/Ti ratios between 20 and 125 and Si/Al approx. 200. It was observed that practically all aluminum is incorporated into the solid during the first hours of reaction, whereas titanium and silicon are continuously incorporated. Increasing Ti content in the reaction mixture results in an increase in particle size, indicating that the presence of Ti reduces the nucleation rate. X-ray diffraction and diffuse reflectance spectra show that when the Ti content is less than 4% of the tetrahedral atoms, this element is incorporated in the sieve framework in isolated form.
{"title":"Properties of [Ti,Al]-beta with different titanium content","authors":"S.L. Jahn, P.A.P. Nascente, D. Cardoso","doi":"10.1016/S0144-2449(97)00121-8","DOIUrl":"10.1016/S0144-2449(97)00121-8","url":null,"abstract":"<div><p>Crystallization curves of [Ti,Al]-Beta were obtained from reaction mixtures having Si/Ti ratios between 20 and 125 and Si/Al approx. 200. It was observed that practically all aluminum is incorporated into the solid during the first hours of reaction, whereas titanium and silicon are continuously incorporated. Increasing Ti content in the reaction mixture results in an increase in particle size, indicating that the presence of Ti reduces the nucleation rate. X-ray diffraction and diffuse reflectance spectra show that when the Ti content is less than 4% of the tetrahedral atoms, this element is incorporated in the sieve framework in isolated form.</p></div>","PeriodicalId":23983,"journal":{"name":"Zeolites","volume":"19 5","pages":"Pages 416-421"},"PeriodicalIF":0.0,"publicationDate":"1997-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0144-2449(97)00121-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79262541","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}
Pub Date : 1997-11-01DOI: 10.1016/S0144-2449(97)00112-7
Shu-Bin Pu, Tomoyuki Inui
The stretching vibration of hydroxyl groups on H-ZSM-5 samples with different crystallite size and Al content was investigated by diffuse reflectance i.r. spectroscopy. Good linear relations for the intensity of the 3,740-cm−1 for the region versus the external surface area and the intensity of the 3,610-cm−1 for the region versus Al content were obtained. It is proven that the absorbance at 3,740 cm−1 is attributed to the terminal (Si-) O-H groups, which are located completely on the external surface, and an absorbance at 3,610 cm−1 is ascribed to (Al-)O-H groups, which are distributed on both the external and internal surface of H-ZSM-5.
{"title":"Diffuse reflectance i.r. spectroscopic study on hydroxyl groups of H-ZSM-5s having different sizes and properties","authors":"Shu-Bin Pu, Tomoyuki Inui","doi":"10.1016/S0144-2449(97)00112-7","DOIUrl":"10.1016/S0144-2449(97)00112-7","url":null,"abstract":"<div><p>The stretching vibration of hydroxyl groups on H-ZSM-5 samples with different crystallite size and Al content was investigated by diffuse reflectance i.r. spectroscopy. Good linear relations for the intensity of the 3,740-cm<sup>−1</sup> for the region versus the external surface area and the intensity of the 3,610-cm<sup>−1</sup> for the region versus Al content were obtained. It is proven that the absorbance at 3,740 cm<sup>−1</sup> is attributed to the terminal (Si-) O-H groups, which are located completely on the external surface, and an absorbance at 3,610 cm<sup>−1</sup> is ascribed to (Al-)O-H groups, which are distributed on both the external and internal surface of H-ZSM-5.</p></div>","PeriodicalId":23983,"journal":{"name":"Zeolites","volume":"19 5","pages":"Pages 452-454"},"PeriodicalIF":0.0,"publicationDate":"1997-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0144-2449(97)00112-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79011088","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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