کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6688433 | 501886 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impact of potassium promoter on Cu-Fe based mixed alcohols synthesis catalyst
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Impact of potassium promoter on Cu-Fe based mixed alcohols synthesis catalyst Impact of potassium promoter on Cu-Fe based mixed alcohols synthesis catalyst](/preview/png/6688433.png)
چکیده انگلیسی
Impacts of K promoter on microstructures of a precipitated Cu-Fe based catalyst were studied by N2-physisorption (BET), X-ray photoelectron spectroscopy (XPS), X-ray diffractometer (XRD) and hydrogen temperature-programmed desorption/reduction (H2-TPD/TPR). Mixed alcohols synthesis (MAS) was carried out in a fixed-bed reactor. The results indicated that incorporation of K in the Cu-Fe based catalyst decreased the surface area of the particles, whereas promoted the immigration of bulky iron species to surface layers and strengthened the interaction of surface Fe-Cu. The increase of K concentration weakened the H2 chemisorption and restrained the reduction of both the Cu and Fe species. The catalytic activity and mixed alcohols selectivity increased accompanied with a gradually increasing K concentration, and reached the highest values as the amount of K increased to 0.5Â wt.%. Subsequently, the MAS activity and selectivity C2+OH presented a decreasing trend. In addition, the increase of K concentration facilitated the formation of heavy hydrocarbons.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 138, 15 January 2015, Pages 584-589
Journal: Applied Energy - Volume 138, 15 January 2015, Pages 584-589
نویسندگان
Mingyue Ding, Junling Tu, Minghuang Qiu, Tiejun Wang, Longlong Ma, Yuping Li,