Surface Technology最新文献

Porous structure and surface area of oxide, reduced and sulphided forms of alumina-supported cobalt molybdena catalyst 氧化铝负载的钼钴催化剂的氧化、还原和硫化形式的多孔结构和表面积

Surface Technology Pub Date : 1985-12-01 DOI: 10.1016/0376-4583(85)90096-2

Zenon Sarbak

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引用次数: 6

The kinetics of organic film growth during the cathodic electrodeposition process 阴极电沉积过程中有机膜生长动力学研究

Surface Technology Pub Date : 1985-12-01 DOI: 10.1016/0376-4583(85)90098-6

V.B. Mišković, M.D. Maksimović

引用次数: 11

The flocculation of cellulose powders with polymer flocculants 高分子絮凝剂对纤维素粉的絮凝作用

Surface Technology Pub Date : 1985-12-01 DOI: 10.1016/0376-4583(85)90101-3

Asif S. Bhatti, David Dollimore, J.I. Bhatty, O. Behar, L. Davies

引用次数: 1

Sorption-desorption studies on alumina pretreated with acids: I. The anionic dye orange II 酸预处理氧化铝的吸附-解吸研究:1 .阴离子染料橙

Surface Technology Pub Date : 1985-12-01 DOI: 10.1016/0376-4583(85)90094-9

V.K. Jain, G.L. Mundhara, Ramesh K. Mishra, J.S. Tiwari

{"title":"Sorption-desorption studies on alumina pretreated with acids: I. The anionic dye orange II","authors":"V.K. Jain, G.L. Mundhara, Ramesh K. Mishra, J.S. Tiwari","doi":"10.1016/0376-4583(85)90094-9","DOIUrl":"10.1016/0376-4583(85)90094-9","url":null,"abstract":"<div>Brockmann alumina was subjected to chemical pretreatment with HNO3, H2SO4 and H3PO4 of various concentrations, and samples of surface phase pH 3.5 − 8.5 (HNO3Al2O3(n), H2SO4-treated Al2O3(s)) and pH 4.0 − 8.0 (H3PO4-treated Al2O3(p)) were prepared. Sorption-desorption behaviour of the anionic dye Orange II (C.I.15510) with change in pH on these substrates was studied. Quantitative sorption is shown at pH ⩽ 4.0 (Al2O3(n)), and a maximum is observed at pH 5.0 (Al2O3(s)) and pH 3.0 (Al2O3(p)). Variation in the amount of sorption with time (10 min – 72 h), temperature (30 – 60 °C) and regeneration of the substrates with aqueous inorganic electrolytes is also reported. Desorption efficacy of the anions is in the order PO43− >SO42− >NO3−. The acid treatment, and hence the specifically adsorbed anions (NO3−, SO42−, PO43−), appears to lower the isoelectric pH of alumina (pH 8.0). The results show the involvement of anion-exchange properties of the alumina.</div>","PeriodicalId":22037,"journal":{"name":"Surface Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0376-4583(85)90094-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83565949","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: 12

Electrochemical aspects of steel corrosion in sea water 钢在海水中腐蚀的电化学方面

Surface Technology Pub Date : 1985-12-01 DOI: 10.1016/0376-4583(85)90100-1

J. Sefaja, J. Malina

引用次数: 5

Sorption-desorption studies on alumina pretreated with acids: II. Oxyanions on HNO3-treated alumina 酸预处理氧化铝的吸附-解吸研究II。hno3处理氧化铝上的氧阴离子

Surface Technology Pub Date : 1985-12-01 DOI: 10.1016/0376-4583(85)90095-0

Ramesh K. Mishra, G.L. Mundhara, V.K. Jain, J.S. Tiwari

{"title":"Sorption-desorption studies on alumina pretreated with acids: II. Oxyanions on HNO3-treated alumina","authors":"Ramesh K. Mishra, G.L. Mundhara, V.K. Jain, J.S. Tiwari","doi":"10.1016/0376-4583(85)90095-0","DOIUrl":"10.1016/0376-4583(85)90095-0","url":null,"abstract":"<div>Sorption-desorption behaviour of three oxyanions (MnO4−, CrO42- and VO3−) on chromatographic alumina pretreated with HNO3 is described. The sorption is found to be pH dependent, and has maxima at surface pH values of 3.5 (MnO4−), 2.5 (VO3−) and 2.0 (CrO42−). The affinity of MnO4- and CrO42- is almost negligible at surface pH values of 5.5 or more. However, VO3- shows affinity for the substrate in the pH range 5.0 - 8.8. The monovalent anion appears to be sorbed, primarily via electrostatic interaction with the surface sites created by the acid treatment. The CrO42- appears to involve ion exchange and weak chemical interactions. Mixtures of the oxyanions have been separated (binary and ternary) by column chromatography using inorganic electrolytes as eluents.</div>","PeriodicalId":22037,"journal":{"name":"Surface Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0376-4583(85)90095-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88104933","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: 4

The impedance of the porous cadmium electrode in alkali 多孔镉电极在碱中的阻抗

Surface Technology Pub Date : 1985-12-01 DOI: 10.1016/0376-4583(85)90099-8

R.T. Barton, M. Hughes, S.A.G.R. Karunathilaka, P.J. Mitchell, N.A. Hampson

引用次数: 2

Electrodeposition of catalytically active nickel powder from sulphate baths: Effect of some operating variables 硫酸盐浴电沉积催化活性镍粉:一些操作变量的影响

Surface Technology Pub Date : 1985-12-01 DOI: 10.1016/0376-4583(85)90097-4

A.M. Abd El-Halim , R.M. Khalil

{"title":"Electrodeposition of catalytically active nickel powder from sulphate baths: Effect of some operating variables","authors":"A.M. Abd El-Halim , R.M. Khalil","doi":"10.1016/0376-4583(85)90097-4","DOIUrl":"10.1016/0376-4583(85)90097-4","url":null,"abstract":"<div>Fine-grained nickel powder has been successfully electrodeposited from a very dilute all-sulphate bath of the composition 0.0125 moll−1 NiSO4 · 7H2O, 0.23 moll−1 (NH4)2SO4, 0.1 moll−1 H3BO3 and 0.07moll−1 Na2SO4 · 10H2O. The current efficiency of the deposition process and the surface morphology, as well as the catalytic activity of the electrodeposited nickel powder towards the decomposition of 0.4% H2O2 solution, were found to be fundamentally influenced by the operating variables pH, current density and duration of the electrolysis. X-ray diffraction studies revealed that the nickel powder is free from oxide and hydroxide contaminations. Under the optimum operating conditions (pH = 7.7 j = 13.3 A dm−2 and t = 10 min) the selected bath produced a nickel deposit characterized by catalytic activity approaching 100% with a deposition efficiency around 18%.</div>","PeriodicalId":22037,"journal":{"name":"Surface Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0376-4583(85)90097-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86176035","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: 7

The corrosion behaviour of nickel in molten NaNO3KNO3 eutectic 镍在熔融NaNO3KNO3共晶中的腐蚀行为

Surface Technology Pub Date : 1985-11-01 DOI: 10.1016/0376-4583(85)90116-5

A. Baraka, R.M.S. Baraka, A. Abdel-Razik

引用次数: 6

Studies on anodizing of aluminium in alkaline electrolyte using alternating current 铝在碱性电解液中交流阳极氧化的研究

Surface Technology Pub Date : 1985-11-01 DOI: 10.1016/0376-4583(85)90117-7

S. John, V. Balasubramanian, B.A. Shenoi

引用次数: 11