نتایج جستجو برای: bed medium zeolite
تعداد نتایج: 293206 فیلتر نتایج به سال:
The article highlights the development of cheap affordable highly efficient catalytic oxidation system harmful components industrial flue gases carbon graphite enterprises, its design features according to parameters furnace equipment, which will significantly improve environmental safety metallurgical and machine-building enterprises. presented calculation solutions, in addition production, ca...
An evaluation of natural zeolite as a microorganism carrier in nitrifying reactors operated in batch mode was carried out. Specifically, the influence of zeolite particle sizes of 0.5, 1.0 and 2.0 mm in diameter on microorganism adherence to zeolite, ammonium adsorption capacity and the identification of microbial populations were assessed. The greatest amount of total biomass adhered was obser...
Zeolite catalysts that could allow the efficient synthesis of n-butene, such as 1-butene, trans-2-butene, and cis-2-butene, in dimethyl ether (DME)-to-olefin (DTO) reaction were investigated using a fixed-bed flow reactor. The zeolites characterized by N2 adsorption desorption, X-ray diffraction (XRD), thermogravimetry (TG), NH3 temperature-programmed desorption (NH3-TPD). A screening ten avail...
BACKGROUND A firm mattress is commonly believed to be beneficial for low-back pain, although evidence supporting this recommendation is lacking. We assessed the effect of different firmnesses of mattresses on the clinical course of patients with chronic non-specific low-back pain. METHODS In a randomised, double-blind, controlled, multicentre trial, we assessed 313 adults who had chronic non-...
Hydrogen was produced by steam reforming of dimethyl ether (DME) using a physical mixture of commercial HZSM-5 zeolite (for DME hydrolyzing) and Cu/ZnO/Al2O3 (for methanol steam reforming) as a catalyst in a fixed bed reactor. The experiments were performed at atmospheric pressure and in a temperature range from 270 to 310 °C. The effects of feed temperature and gas hourly space velocity (GHSV)...
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