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Synthesis of nano-Pt onto ceria support as catalyst for water–gas shift reaction by Reactive Spray Deposition Technology

Paper ID Volume ID Publish Year Pages File Format Full-Text
39863 45837 2014 8 PDF Available
Title
Synthesis of nano-Pt onto ceria support as catalyst for water–gas shift reaction by Reactive Spray Deposition Technology
Abstract

•1 wt% nano Pt on ceria was synthesized using RSDT for water–gas shift reaction.•Catalyst was tested with 1 vol% CO, 3 vol% H2O in the range 100 °C–400 °C.•No sintering or agglomerations of Pt nanoparticles was evident from HRTEM.•Complete CO conversion was obtained at 250 °C at GHSV of 8622 h−1.•RSDT prepared catalysts showed a 40% activity boost over conventionally prepared catalysts.

Reactive Spray Deposition Technology (RSDT) was employed to synthesize 1 wt% Pt of 0.5–2 nm onto ceria of 8–30 nm. The catalyst was evaluated for water–gas shift (WGS) reaction with 1 vol% CO & 3 vol% H2O, atmospheric pressure, temperature range (100–350 °C) and gas hourly space velocity (GHSV) of 8622 h−1. CO conversion of 15% (150 °C), 18% (200 °C), 37% (225 °C) and 100% (250 °C) was observed. Comparison with conventionally prepared catalysts (sol–gel, co–precipitation, and incipient wetness impregnation) from literature revealed superior activity with RSDT synthesized catalysts. Catalyst morphology was investigated with TGA, ICP–OES, XRD, TPR, HRTEM, and SEM with XEDS. No evidence of sintering or agglomeration of Pt nanoparticles was observed in HRTEM which could account for the dramatic improvement in activity.

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Keywords
Water–gas shift reaction; Ceria supported platinum catalyst; CO conversion; Reactive Spray Deposition Technology; High resolution transmission electron microscopy
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 475, 5 April 2014, Pages 461–468
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us