A Versatile VMPO Catalyst Prepared In Situ for Oxidative Ammonolysis of Isomeric Picolines and Xylenes

The V2O5–MoO3–P2O5 (VMPO) catalyst has been prepared in situ by thermal decomposition of vanado-molybdophosphoric acid (PMoV) on TiO2 support at 475°C. The TiO2 supported VMPO catalysts are characterized by FT–IR, XRD, BET surface area, NH3–TPD, and H2–TPR. Morphology of the catalyst has been studied by TEM. The accumulated data indicate decomposition of PMoV and presence of phosphate and pyrophosphate phases of molybdenum and vanadium after calcination. TPD and TPR studies exhibit the moderate acidity and presence of V4+ in the material, respectively. The VMPO catalyst has been used for ammoxidation of six different compounds including three isomeric picolines and three isomeric xylenes to the corresponding nitriles with the yield of 90–96%

Zoon′s balanitis - diagnosis and follow-up

Zoon′s balanitis, is a chronic erosive lesion on glans penis, which on biopsy shows a plasma cell infiltrate in dermal layers. It is typical in uncircumcised males. We are reporting a rare case of Zoon′s balanitis in our insti-tution. A 21-year-old unmarried male presented with pain and discharge from penis. A velvety patch was noted over glans. He underwent circumcision and the patch was ex-cised and sent for biopsy. Histopathological report was consistent with balanitis circumscripta plasmacellularis. We reviewed the literature about similar reports

Mercury in coal from south eastern coalfeld and mercury partitioning at sub‑critical coal‑fred power plant

India is considered as one of the major mercury emitters of the world. Coal combustion in power plants is the foremost source of mercury emissions. Coal samples from South Eastern Coalfeld (SECL) region, India were assessed for mercury content and its partition in a 500 MW boiler unit of a coal-fred power plant. Hg content in the runof mine coal samples varied from 0.011 to 0.188 mg/kg. The Hg content in coal was positively correlated with ash and sulfur. In the power plant, about 65% of the Hg present in the feed coal was emitted through stack, whereas the rest were associated with the fne fy ash (33%), bottom ash (1.9%), and mill rejects (0.1%).The concentration of total Hg in the stack gas varied from 8.5 to 13.7 μg/Nm3, wherein Hg0 (74–81%) was much higher than Hg2+ (19–26%). The estimated mercury emission factor was 1.0–3.2 mg/GJ, which is comparatively higher due to the use of high ash coal and the lack of fue gas desulphurisation system. Hg portion�ing along the fue gas hoppers were also investigated which indicates relationship between Hg adsorption and carbon/sulfur content of the fy ash