ترجمه مقاله نقش ضروری ارتباطات 6G با چشم انداز صنعت 4.0
- مبلغ: ۸۶,۰۰۰ تومان
ترجمه مقاله پایداری توسعه شهری، تعدیل ساختار صنعتی و کارایی کاربری زمین
- مبلغ: ۹۱,۰۰۰ تومان
ABSTRACT
The carbon defects in nitrogen-doped carbon were controlled by removing the N atoms under different temperatures during the catalyst preparation process. The synthesised catalysts were characterised by multiple techniques, and the catalytic performance was evaluated under experimental conditions of gas hourly space velocity (C2H2) = 36 h−1 at 220 °C. The catalytic performance of the synthesised nitrogen-doped carbon for acetylene hydrochlorination increased with the increment of carbon defect. Carbon defects in the catalysts were proposed to affect the adsorption of C2H2 and HCl and promote their conversion. The regeneration of the nitrogen-doped carbon catalyst was found to be effective by using high-temperature treatment in an NH3 atmosphere.
4. Conclusions
In summary, we found that carbon defects in nitrogen-doped carbon could enhance the adsorption capacity of C2H2 and HCl and promote acetylene hydrochlorination. The synthesised C1100 catalyst displayed excellent catalytic activity, close to that of a Au catalyst, under the reaction conditions of GHSV (C2H2) = 36/h and 220 °C. The C1100 catalyst could be easily regenerated by treating with NH3 at 700 °C after deactivation. The relationship between the carbon defects and catalytic activity may be useful for designing better carbon-based catalysts for acetylene hydrochlorination.