There is a special reason for reviewing this book at this time: it is the 50th edition of a compendium that is known and used frequently in most chemical and physical laboratories in many parts of the world. Surely, a publication that has been published for 56 years, withstanding the vagaries of science in this century, must have had something to offer. There is another reason: while the book is a standard fixture in most chemical and physical laboratories, including those in medical centers, it is not as frequently seen in the laboratories of physician's offices (those either in solo or group practice). I believe that the Handbook can be useful in those laboratories. One of the reasons, among others, is that the various basic items of information it offers may be helpful in new tests, either physical or chemical, which are continuously being published. The basic information may relate

Handbook of Chemistry and Physics

Advances in the development of novel cobalt Fischer-Tropsch catalysts for synthesis of long-chain hydrocarbons and clean fuels.

Recently sulfate radical-based advanced oxidation processes (SR-AOPs) attract increasing attention due to their capability and adaptability in decontamination. The couple of cobalt and peroxymonosulfate (PMS) is an efficient way to produce reactive sulfate radicals. This article reviews the state-of-the-art progress on various heterogeneous cobalt-based catalysts for PMS activation, including cobalt oxides, cobalt-ferrite and supported cobalt by diverse substrates. We summarize the intrinsic properties of these catalysts and their fundamental behaviors in PMS activation, as well as synthetic approaches. In addition, influencing factors and synergistic techniques of Co/PMS systems in organic degradation and possible environmental applications are also discussed. Finally, we propose perspectives on challenges related to cobalt-based catalysts, heterogeneous Co/PMS systems and their potential applications in practical environmental cleanup.

Cobalt-catalyzed sulfate radical-based advanced oxidation: A review on heterogeneous catalysts and applications

Oxidation into CO2 is a major solution to CO abatement in air depollution treatments. The development of catalytic converters led to an extraordinary high number of publications on metal catalysts during the last fifty years. Due to the increasing price of noble metals and to remarkable progresses in oxide syntheses, catalytic oxidation of carbon monoxide over oxide catalysts has recently gained in interest, even if some oxides are known to present remarkable activity since the beginning of the 20th century. In this Review, the kinetics and mechanism of CO oxidation on single and mixed oxides are examined, alongside the catalyst structures

Catalytic Oxidation of Carbon Monoxide over Transition Metal Oxides

http://ntur.lib.ntu.edu.tw/bitstream/246246/172223/1/23.pdf

Characterization of cobalt oxides studied by FT-IR, Raman, TPR and TG-MS

A mix-valenced cobalt oxide, CoOx, was prepared from cobalt nitrate aqueous solution through a precipitation with sodium hydroxide and an oxidation by hydrogen peroxide. Further, other pure cobalt oxide species were refined from the CoOx by temperature-programmed reduction (TPR) at 170, 230 and 300 °C (labeled as R-170, R-230 and R-300, respectively). They were characterized by X-ray (XRD), infrared (IR), thermogravimetry (TG) and TPR. The major composition of CoOx is CoO(OH), with a small amount of Co4+ species; R-170 is CoO(OH) with a hexagonal structure; R-230 is Co3O4 with a spinel structure and R-300 is CoO with a cubic structure. Their catalytic activities toward the CO oxidation were further studied in a continuous flow microreactor. The results indicated that the relative activity decreased significantly with the oxidation state of cobalt, i.e., CoO(+2)≳Co3O4(+8/3)≫CoO(OH)( +3)≳CoOx(>+3).

/pdf/synthesis-characterization-and-catalytic-oxidation-of-carbon-2u9jptje3e.pdf

Synthesis, Characterization and Catalytic Oxidation of Carbon Monoxide over Cobalt Oxide

A high-valance cobalt oxide, CoO
 x
 , was prepared from cobalt nitrate aqueous solution through precipitation with sodium hydroxide and oxidation by hydrogen peroxide. Further, other pure cobalt oxide species were refined from the CoO
 x
 by temperature-programmed reduction (TPR) to 170, 230 and 300 °C. They were characterized by TPR and X-ray diffraction (XRD). Adsorption of CO and the co-adsorption of CO/O2 over the cobalt oxides were further tested by in situ FTIR. It was shown that Co3O4 is quite active for the oxidation of CO at room temperature in the presence of oxygen, leading to the formation of CO2. The variation in the oxidation of CO was interpreted with a mechanism involving two kinds of oxygen species, i.e., *-O2 on the CoO
 x
 surface and *-OL on the surface of Co3O4 spinel structure.

/pdf/in-situ-ftir-study-of-cobalt-oxides-for-the-oxidation-of-1rmpzcij40.pdf

In situ FTIR Study of Cobalt Oxides for the Oxidation of Carbon Monoxide

The detailed thermal characterization of Pd/TiO 2 –Al 2 O 3 catalysts under oxygen and hydrogen atmosphere was conducted by means of thermal gravimetric analysis/differential scanning calorimetry (TG/DSC), temperature-programmed reduction (TPR) and temperature-programmed desorption (TPD). A simultaneous TG/DSC measurement revealed that the heat evolved during oxygen adsorption at 25 °C varied slightly with the supports and had a higher value for the smaller palladium crystallite. Hydrogen chemisorption and BET measurements revealed that the coating of Pd/Al 2 O 3 catalysts with titania modified the support character to achieve a high dispersion of palladium. TPR and TPD characterizations of oxidized samples further demonstrated that the coating of Pd/Al 2 O 3 catalysts with titania promoted the reduction and decomposition of PdO into palladium.

Effects of the addition of titania on the thermal characterization of alumina-supported palladium

A series of cobalt oxides with different oxidation states have been prepared by using a precipitation-oxidation method and a controlled reduction method (in situ thermogravimetry-temperature programmed reduction, STG-TPR). The gradual change in microstructure with different oxides is studied by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results show that high-valence cobalt oxide is hexagonal with an elongated shape, Co3O4 is spinel with hollow spheroidal shape and CoO is a face-centered cubic structure, respectively.

Hung-Kuan Lin

Papers

Synthesis, Characterization and Catalytic Oxidation of Carbon Monoxide over Cobalt Oxide

In situ FTIR Study of Cobalt Oxides for the Oxidation of Carbon Monoxide

Effects of the addition of titania on the thermal characterization of alumina-supported palladium

Thermal characterization and microstructure change of cobalt oxides

Low temperature complete combustion of methane over titania-modified alumina-supported palladium ☆