Carbon dioxide is a gas that is changing our environment. Its role as a greenhouse gas is clear with the onset of global warming. In efforts to address this issue, ambitious and creative schemes are targeting materials including zeolites, silica gels, aluminas, and activated carbons, as well as sophisticated metal–organic frameworks (MOFs) for the benign capture and storage of carbon dioxide. A...

zinc (ⅱ) tricarboxylate (zn-btc) with metal-organic framework (mof) has been synthesized for the first time under solvothermal conditions and has been tested as an adsorbent for methane and carbon dioxide at standard temperature and pressure. the adsorbent was characterized by means of x-ray diffraction(xrd), brunauer-emmet-teller (bet), fourier transform infrared (ft-ir) and scanning electron ...

Carbon oxides such as carbon dioxide (CO2) and carbon trioxide (CO3) have long been known as important molecules in atmospheric and solid state chemical reactions. Although higher order carbon oxides have been theoretically predicted to be stable and also important, their detection has been difficult. Here, we report on the first spectroscopic detection of the cyclic (C2v) isomer of carbon tetr...

The reduction of carbon dioxide to fuels and chemicals can be accomplished by the use of electrocatalysts of the platinum group metals. Worthwhile products include carbon monoxide, formate, methanol, methane, oxalate and even higher hydrocarbons depending on the catalyst type and environment. Three classes of electrocatalysts have been identified: catalytic metal sugaces, monomeric solution com...

Background: Poisoning with carbon monoxide occurs occasionally worldwide, and the gold diagnostic standard is to measure carboxyhemoglobin level in the blood. This study investigated the correlation between carboxyhemoglobin and the end-tidal carbon dioxide levels in 50 patients with carbon monoxide poisoning. Methods: We recruited 50 volunteer patients who had been admitted to the Emergency S...

The electrocatalytic reduction of carbon dioxide (CO2) to liquid fuels has tremendous positive impacts on atomospheric carbon balance and help to reduce global warming issues. This paper reviewed current knowledge of electrochemical CO2 reduction to small organic molecule fuels on metal catalysts and gas-phase CO2 reduction techniques based on gas diffusion electrode and solid polymer electroly...

Weld area and weld depth/width ratio can be considered to be of the most important geometrical factors in pulsed laser welding. The effects of carbon dioxide and oxygen additions to the argon shielding gas on the weld properties in pulsed laser welding of low carbon steel is investigated. Presence of carbon dioxide and oxygen up to 10 and 15 percent respectively decreases the weld geometrical f...