Catalytic Steam-Reforming of Glycerol over LDHs-Derived Ni-Al Nanosheet Array Catalysts for Stable Hydrogen Production

نویسندگان

چکیده

In the present work, LDHs–derived Ni–Al nanosheet arrays (NiAl/NA) were successfully synthesized via a one–step hydrothermal method, and applied in steam-reforming of glycerol reaction for enhanced stable hydrogen production. The physicochemical properties catalysts characterized using various techniques, including XRD, SEM–EDS, XPS, N2–physisorption, Raman, TG–DTG. results indicate that smooth cross–linked mixed metal oxide nanosheets orderly perpendicularly grown on Ni foam substrate. SEM line scan characterization reveals concentration gradient from bottom to top nanosheet, which leads distinctly optimized valence states an binding strength oxygen species. Owing improved reducibility more exposed active sites afforded by its array structures, NiAl/NA catalyst shows conversion (83.1%) higher H2 yield (85.4%), as well longer stability (1000 min), compared traditional powder. According spent density functional theory (DFT) calculations, coke deposition is effectively suppressed construction, with only 1.25 wt.% amorphous carbons formed CO disproportionation.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Propene versus propane steam reforming for hydrogen production over Pd-based and Ni-based catalysts

Experiments of propane and propene steam reforming have been performed over a Pd–Cu/c-Al2O3 catalyst and over a Ni/NiAl2O4 catalyst. Over the palladium-based catalyst, the steam reforming of propene is faster and more selective than steam reforming of propane. Over the Pd catalyst, the steam reforming of propane is likely inhibited by site poisoning. In contrast, over Ni-based catalyst the refo...

متن کامل

Hydrogen production via steam reforming of LPG on Ni/Zeolite catalysts

Steam reforming is one of the most important processes for producing hydrogen from hydrocarbon fuels such as LPG and has attracted much attention due to its high efficiency and economy. In this study, the LPG steam reforming reaction was investigated on nickel catalysts supported on four various zeolites (H-Y, Na-Y, HZSM5 and Ferrierite). The catalytic tests were performed in a tubular fixed be...

متن کامل

Effect of Pt on Zn-Free Cu-Al Catalysts for Methanol Steam Reforming to Produce Hydrogen

Steam reforming of methanol can be considered as an attractive reaction aiming at hydrogen production for PEM fuel cells. Although Cu/Al-contained catalysts are considerably evaluated in this reaction, further evaluation is essential to evaluate the impact of some promoters like Pt in order to find a comprehensively optimized catalyst. Pt promoter is employed with different methods in this ...

متن کامل

Fe−Ni−MCM-41 Catalysts for Hydrogen-Rich Syngas Production from Waste Plastics by Pyrolysis−Catalytic Steam Reforming

A two-stage pyrolysis−catalytic steam reforming process was used with mesoporous MCM-41 supported iron and nickel bimetallic catalysts for hydrogen-rich syngas production from a simulated mixture of waste plastics. Different Fe/Ni weight ratios (00:20, 05:15, 10:10, 05:15, and 20:00) have been investigated to determine the influence on hydrogen production. The results showed that the presence o...

متن کامل

Hydrogen production by sorption-enhanced steam reforming of glycerol.

Catalytic steam reforming of glycerol for H(2) production has been evaluated experimentally in a continuous flow fixed-bed reactor. The experiments were carried out under atmospheric pressure within a temperature range of 400-700 degrees C. A commercial Ni-based catalyst and a dolomite sorbent were used for the steam reforming reactions and in situ CO(2) removal. The product gases were measured...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Catalysts

سال: 2023

ISSN: ['2073-4344']

DOI: https://doi.org/10.3390/catal13071047