Effect of surface defects on the adsorption rate of O2 on polycrystalline rhodium |
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Authors: | A A Rar and V P Ivanov |
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Institution: | (1) Institute of Catalysis, 630090 Novosibirsk, USSR |
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Abstract: | By using a method of secondary ion mass-spectrometry, the initial sticking coefficient of oxygen (So) has been measured when O2 is adsorbed on two types of the polycrystalline rhodium surface. These surfaces are: 1. defective, i. e. subjected to ion bombardment and 2. smooth, i.e. annealed after bombardment. Values obtained for the defective and smooth surfaces are So 0.35 at sample temperatures T=295–1000 K and So 4×10–3 at T=680–870 K, respectively.
![Mcy](/content/g547724032g57542/xxlarge1052.gif) ![iecy](/content/g547724032g57542/xxlarge1077.gif) ![tcy](/content/g547724032g57542/xxlarge1090.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![dcy](/content/g547724032g57542/xxlarge1076.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![vcy](/content/g547724032g57542/xxlarge1074.gif) ![tcy](/content/g547724032g57542/xxlarge1090.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![rcy](/content/g547724032g57542/xxlarge1088.gif) ![icy](/content/g547724032g57542/xxlarge1080.gif) ![chcy](/content/g547724032g57542/xxlarge1095.gif) ![ncy](/content/g547724032g57542/xxlarge1085.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![icy](/content/g547724032g57542/xxlarge1080.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![ncy](/content/g547724032g57542/xxlarge1085.gif) ![ncy](/content/g547724032g57542/xxlarge1085.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) 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![bcy](/content/g547724032g57542/xxlarge1073.gif) ![acy](/content/g547724032g57542/xxlarge1072.gif) ![rcy](/content/g547724032g57542/xxlarge1088.gif) ![dcy](/content/g547724032g57542/xxlarge1076.gif) ![icy](/content/g547724032g57542/xxlarge1080.gif) ![rcy](/content/g547724032g57542/xxlarge1088.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![vcy](/content/g547724032g57542/xxlarge1074.gif) ![kcy](/content/g547724032g57542/xxlarge1082.gif) — ![ldquo](/content/g547724032g57542/xxlarge8220.gif) ![dcy](/content/g547724032g57542/xxlarge1076.gif) ![iecy](/content/g547724032g57542/xxlarge1077.gif) ![fcy](/content/g547724032g57542/xxlarge1092.gif) ![iecy](/content/g547724032g57542/xxlarge1077.gif) ![kcy](/content/g547724032g57542/xxlarge1082.gif) ![tcy](/content/g547724032g57542/xxlarge1090.gif) ![ncy](/content/g547724032g57542/xxlarge1085.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![jcy](/content/g547724032g57542/xxlarge1081.gif) , ![ncy](/content/g547724032g57542/xxlarge1085.gif) ![pcy](/content/g547724032g57542/xxlarge1087.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![vcy](/content/g547724032g57542/xxlarge1074.gif) ![iecy](/content/g547724032g57542/xxlarge1077.gif) ![rcy](/content/g547724032g57542/xxlarge1088.gif) ![khcy](/content/g547724032g57542/xxlarge1093.gif) ![ncy](/content/g547724032g57542/xxlarge1085.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![scy](/content/g547724032g57542/xxlarge1089.gif) ![tcy](/content/g547724032g57542/xxlarge1090.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![tcy](/content/g547724032g57542/xxlarge1090.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![zhcy](/content/g547724032g57542/xxlarge1078.gif) ![iecy](/content/g547724032g57542/xxlarge1077.gif) ![ncy](/content/g547724032g57542/xxlarge1085.gif) ![ncy](/content/g547724032g57542/xxlarge1085.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![pcy](/content/g547724032g57542/xxlarge1087.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![scy](/content/g547724032g57542/xxlarge1089.gif) ![lcy](/content/g547724032g57542/xxlarge1083.gif) ![bcy](/content/g547724032g57542/xxlarge1073.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![mcy](/content/g547724032g57542/xxlarge1084.gif) ![bcy](/content/g547724032g57542/xxlarge1073.gif) ![acy](/content/g547724032g57542/xxlarge1072.gif) ![rcy](/content/g547724032g57542/xxlarge1088.gif) ![dcy](/content/g547724032g57542/xxlarge1076.gif) ![icy](/content/g547724032g57542/xxlarge1080.gif) ![rcy](/content/g547724032g57542/xxlarge1088.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![vcy](/content/g547724032g57542/xxlarge1074.gif) ![kcy](/content/g547724032g57542/xxlarge1082.gif) -![ldquo](/content/g547724032g57542/xxlarge8220.gif) ![gcy](/content/g547724032g57542/xxlarge1075.gif) ![lcy](/content/g547724032g57542/xxlarge1083.gif) ![acy](/content/g547724032g57542/xxlarge1072.gif) ![dcy](/content/g547724032g57542/xxlarge1076.gif) ![kcy](/content/g547724032g57542/xxlarge1082.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![jcy](/content/g547724032g57542/xxlarge1081.gif) . ![Dcy](/content/g547724032g57542/xxlarge1044.gif) ![lcy](/content/g547724032g57542/xxlarge1083.gif) ![ldquo](/content/g547724032g57542/xxlarge8220.gif) ![dcy](/content/g547724032g57542/xxlarge1076.gif) ![iecy](/content/g547724032g57542/xxlarge1077.gif) ![fcy](/content/g547724032g57542/xxlarge1092.gif) ![iecy](/content/g547724032g57542/xxlarge1077.gif) ![kcy](/content/g547724032g57542/xxlarge1082.gif) ![tcy](/content/g547724032g57542/xxlarge1090.gif) ![ncy](/content/g547724032g57542/xxlarge1085.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![jcy](/content/g547724032g57542/xxlarge1081.gif) ![pcy](/content/g547724032g57542/xxlarge1087.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![vcy](/content/g547724032g57542/xxlarge1074.gif) ![iecy](/content/g547724032g57542/xxlarge1077.gif) ![rcy](/content/g547724032g57542/xxlarge1088.gif) ![khcy](/content/g547724032g57542/xxlarge1093.gif) ![ncy](/content/g547724032g57542/xxlarge1085.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![scy](/content/g547724032g57542/xxlarge1089.gif) ![tcy](/content/g547724032g57542/xxlarge1090.gif) So 0,35 ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![bcy](/content/g547724032g57542/xxlarge1073.gif) ![lcy](/content/g547724032g57542/xxlarge1083.gif) ![acy](/content/g547724032g57542/xxlarge1072.gif) ![scy](/content/g547724032g57542/xxlarge1089.gif) ![tcy](/content/g547724032g57542/xxlarge1090.gif) ![tcy](/content/g547724032g57542/xxlarge1090.gif) ![iecy](/content/g547724032g57542/xxlarge1077.gif) ![mcy](/content/g547724032g57542/xxlarge1084.gif) ![pcy](/content/g547724032g57542/xxlarge1087.gif) ![iecy](/content/g547724032g57542/xxlarge1077.gif) ![rcy](/content/g547724032g57542/xxlarge1088.gif) ![acy](/content/g547724032g57542/xxlarge1072.gif) ![tcy](/content/g547724032g57542/xxlarge1090.gif) ![ucy](/content/g547724032g57542/xxlarge1091.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![bcy](/content/g547724032g57542/xxlarge1073.gif) ![rcy](/content/g547724032g57542/xxlarge1088.gif) ![acy](/content/g547724032g57542/xxlarge1072.gif) ![zcy](/content/g547724032g57542/xxlarge1079.gif) ![tscy](/content/g547724032g57542/xxlarge1094.gif) 295–1000 K, ![dcy](/content/g547724032g57542/xxlarge1076.gif) ![lcy](/content/g547724032g57542/xxlarge1083.gif) ![ldquo](/content/g547724032g57542/xxlarge8220.gif) ![gcy](/content/g547724032g57542/xxlarge1075.gif) ![lcy](/content/g547724032g57542/xxlarge1083.gif) ![acy](/content/g547724032g57542/xxlarge1072.gif) ![dcy](/content/g547724032g57542/xxlarge1076.gif) ![kcy](/content/g547724032g57542/xxlarge1082.gif) ![ocy](/content/g547724032g57542/xxlarge1086.gif) ![jcy](/content/g547724032g57542/xxlarge1081.gif) 4×10–3 ![pcy](/content/g547724032g57542/xxlarge1087.gif) ![rcy](/content/g547724032g57542/xxlarge1088.gif) T=680–870 K.
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