scholarly journals Self-sacrificed two-dimensional REO(CH3COO) template-assisted synthesis of ultrathin rare earth oxide nanoplates

2017 ◽  
Vol 4 (7) ◽  
pp. 1182-1186 ◽  
Author(s):  
Rui Liu ◽  
Ke Wu ◽  
Lin-Dong Li ◽  
Ling-Dong Sun ◽  
Chun-Hua Yan
Keyword(s):  
Rare Earth ◽  
Rare Earth Oxide ◽  
Two Dimensional ◽  
Injection Method ◽  
Hot Injection ◽  
Template Assisted Synthesis

Ultrathin RE2O3nanoplates are synthesized by a hot-injection methodviathein situformed REO(CH3COO) template.

scholarly journals Catalytic Oxidation of HCHO over the Sodium-Treated Sepiolite-Supported Rare Earth (La, Eu, Dy, and Tm) Oxide Catalysts

Catalysts ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 328 ◽  
Author(s):  
Ning Dong ◽  
Qing Ye ◽  
Mengyue Chen ◽  
Shuiyuan Cheng ◽  
Tianfang Kang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Rare Earth ◽  
Catalytic Oxidation ◽  
Rare Earth Oxide ◽  
Catalytic Performance ◽  
Rare Earth Oxides ◽  
Hydroxyl Groups ◽  
In Situ Drifts ◽  
The Rare Earth

The sodium-treated sepiolite (NaSep)-supported rare earth oxide (RE/NaSep; RE = La, Eu, Dy, and Tm) samples were prepared using the rotary evaporation method. Physicochemical properties of these materials were characterized by XRD, SEM, BET, FTIR, XPS, H2–TPR, NH3–TPD, and in situ DRIFTS, and their catalytic activities for formaldehyde (HCHO) (2000 ppm) oxidation were evaluated. The results show that loading of the rare earth oxide on NaSep improved its catalytic performance. Among all the samples, Eu/NaSep performed the best, and complete HCHO conversion was achieved at a temperature of 150 °C and a gas hourly space velocity of 240,000 mL/(g h); a good catalytic activity was still maintained after 45 h of stability test. The catalytic oxidation mechanism of HCHO was studied using the in situ DRIFTS technique. As a result, the effective and stable catalytic performance of the Eu/NaSep sample was mainly due to the presence of hydroxyl groups on the sepiolite surface and the doped rare earth oxides, which contributed to its high performance. HCHO oxidation underwent via the steps of HCHO + O2 → HCOO− + OH− → H2O + CO2. It is concluded that the optimal catalytic activity of Eu/NaSep was associated with the highest Oads/Olatt atomic ratio, the largest amount of hydroxyl groups, the highest acidity, and the best reducibility. The present work may provide new insights into the application in the removal of high-concentration HCHO over the rare earth oxides supported on natural low-cost clays.

Laser cladding in-situ carbide particle reinforced Fe-based composite coatings with rare earth oxide addition

2009 ◽  
Vol 27 (6) ◽  
pp. 997-1002 ◽  
Author(s):  
Chaofeng WU ◽  
Mingxing MA ◽  
Wenjin LIU ◽  
Minlin ZHONG ◽  
Hongjun ZHANG ◽  
...  
Keyword(s):  
Rare Earth ◽  
Laser Cladding ◽  
Carbide Particle ◽  
Composite Coatings ◽  
Rare Earth Oxide ◽  
Oxide Addition

Lean NOxReduction by Hydrogen over Pt-Supported Rare Earth Oxide Catalysts and Their In Situ DRIFTs Study

2009 ◽  
Vol 82 (9) ◽  
pp. 1197-1202 ◽  
Author(s):  
Masahiro Itoh ◽  
Koji Motoki ◽  
Makoto Saito ◽  
Jun Iwamoto ◽  
Ken-ichi Machida
Keyword(s):  
Rare Earth ◽  
Rare Earth Oxide ◽  
Oxide Catalysts ◽  
In Situ Drifts

Synthetic zircon doped with hafnium and rare earth elements: A reference material for in situ hafnium isotope analysis

2011 ◽  
Vol 286 (1-2) ◽  
pp. 32-47 ◽  
Author(s):  
Christopher M. Fisher ◽  
John M. Hanchar ◽  
Scott D. Samson ◽  
Bruno Dhuime ◽  
Janne Blichert-Toft ◽  
...  
Keyword(s):  
Rare Earth ◽  
Reference Material ◽  
Rare Earth Elements ◽  
Isotope Analysis

Concomitant induction to few-layer and 1T-rich two-dimensional MoS2 by rigid segment-containing polysulfide as a sulfur source and in situ intercalator

2021 ◽  
Author(s):  
Yijuan Wang ◽  
Jianzhi Wang ◽  
Jie Liu ◽  
Zhuangwei Xiao ◽  
Yanan Xue ◽  
...  
Keyword(s):  
Sulfur Source ◽  
Two Dimensional ◽  
Rigid Segment

A rigid segment-containing polysulfide was used as a sulfur source and in situ intercalator to induce the formation of few-layer and 1T-rich MoS2.

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