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The instability characteristics of gas swirling flow in a cyclone were investigated experimentally by measuring the instantaneous tangential velocity with the hot‐wire anemometry. The results showed that the instantaneous tangential velocity fluctuated continuously with time at both low and high frequencies. Further analysis of measured data regarding time and frequency domain by probability density...
Novel Fe/MnK‐CNTs nanocomposites are developed as catalysts for direct production of lower olefins from syngas, delivering a high iron time yield of 337.2 μmolCO·
·s−1 with 51.3%C selectivity toward C2C4 olefins under the optimal reaction conditions (270°C, 2.0 MPa, 30,000 mL h−1
). These catalysts are optimized by varying calcination temperature from 150 to 400°C. Multiple techniques...
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