Study on the one-step hydrothermal synthesis of REY (rare earth Y) zeolites from kaolin activated by microwave heating

2022 ◽  
Vol 128 (2) ◽  
Author(s):  
Yuan He ◽  
Shenghui Guo ◽  
Shiwei Li ◽  
Libo Zhang ◽  
Shaohua Yin
Keyword(s):  
Rare Earth ◽  
Hydrothermal Synthesis ◽  
Microwave Heating ◽  
Y Zeolites ◽  
One Step ◽  
The One

scholarly journals Feasibility of the Bio-Mobilization of Rare Earth Elements from Bauxite Residual Red Mud

2021 ◽  
Vol 6 (1) ◽  
pp. 5
Author(s):  
Sadia Ilyas ◽  
Hyunjung Kim ◽  
Rajiv R. Srivastava
Keyword(s):  
Rare Earth ◽  
Citric Acid ◽  
Oxalic Acid ◽  
Red Mud ◽  
Penicillium Chrysogenum ◽  
The Other ◽  
Mode 2 ◽  
One Step ◽  
Mode 3 ◽  
The One

The present work was conducted to evaluate the bioleaching feasibility of red mud with Penicillium chrysogenum strain KBS3 in the presence of glucose, sawdust, and molasses as a substrate and in various leaching modes. The one-step bioleaching system involved 12 mM citric acid, 2.5 mM oxalic acid, 1.8 mM tartaric acid, and 1162 mM gluconic acid, with glucose as the substrate. The biogenic acid production in the two-step bioleaching system involved 15 mM, 1 mM, 0.5 mM, and 152 mM, respectively, and in the spent-medium bioleaching system, it was 63 mM, 29 mM, 23 mM, and 3 mM, respectively, using glucose as the substrate and a pulp density of 3%. The concomitant bio-mobilization of rare earths investigated under different modes were observed to be: 79% Y, 28% La, and 28% Ce in one-step (mode 1) bioleaching; 63% Y, and 28% both La and Ce in the spent-medium (mode 2) bioleaching; and 67% Y, 20% La, and 15% Ce in a two-step (mode 3) bioleaching. On the other hand, the bio-mobilization of rare eaths with molasses as the substrate was found to be: 57% Y, 13.5% La, and 12.7% Ce in mode 4 bioleaching; 57% Y, 14% La, and 12% Ce in mode 5 bioleaching; and 49% Y, 6.3% La, and 2.9% Ce in mode 6 bioleaching of the red mud. Insignificant results were observed using sawdust as the substrate.

Study on One-Step Hydrothermal Synthesis of REY Zeolite from Kaolin Activated by Microwave Heating

2021 ◽  
Author(s):  
Yuan He ◽  
Shenghui Guo ◽  
Shiwei Li ◽  
Libo Zhang ◽  
Shaohua Yin
Keyword(s):  
Hydrothermal Synthesis ◽  
Microwave Heating ◽  
One Step

scholarly journals Synthesis of Monoclinic Vanadium Dioxide via One-Pot Hydrothermal Route

2021 ◽  
Vol 5 (1) ◽  
pp. 13
Author(s):  
Guowei Liu ◽  
Zengyan Du ◽  
Ming Li ◽  
Yi Long
Keyword(s):  
Hydrothermal Synthesis ◽  
Vanadium Dioxide ◽  
Annealed Sample ◽  
Solar Modulation ◽  
Smart Window ◽  
Hydrothermal Route ◽  
One Pot ◽  
Uniform Size ◽  
One Step ◽  
The One

Pure monoclinic vanadium dioxide nanoparticles (VO2 NPs) with a controlled uniform size are considered essential for the preparation of thermochromic smart window coatings on desired substrates. Herein, we report a facile one-step hydrothermal synthesis of VO2(M) NPs without post-treatment of annealing, which may induce unwanted aggregation of NPs. In contrast with the annealed sample, the one-step processed VO2(M) NPs exhibit superior thermochromic performance with the solar modulation efficiency of 11.8% and luminous transmittance of 37.3%.

Preparation of Ti mesh supported N–S–C-tridoped TiO2 nanosheets to achieve high utilization of optical energy for photocatalytic degradation of norfloxacin

RSC Advances ◽  
2016 ◽  
Vol 6 (22) ◽  
pp. 17906-17912 ◽  
Author(s):  
Xiaoyun Zhang ◽  
Dong Li ◽  
Jiafeng Wan ◽  
Xiujuan Yu
Keyword(s):  
Hydrothermal Synthesis ◽  
Photocatalytic Degradation ◽  
Synthesis Method ◽  
Optical Energy ◽  
Tio2 Nanosheets ◽  
One Step ◽  
High Utilization ◽  
The One ◽  
Ti Mesh

The Ti mesh supported N–S–C-tridoped TiO2 nanosheet (N–S–C/TiO2/TMs) catalysts were successfully fabricated by the one-step in situ hydrothermal synthesis method, and then used for photocatalytic degradation of norfloxacin.

Hydrothermal synthesis of a Ba and Mg co-doped Bi12GeO20 photocatalyst with enhanced visible light catalytic activity

RSC Advances ◽  
2016 ◽  
Vol 6 (19) ◽  
pp. 15745-15752 ◽  
Author(s):  
Yi Chen ◽  
Jianzhang Fang ◽  
Shaoyou Lu ◽  
Chaoping Cen ◽  
Cong Cheng ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrothermal Synthesis ◽  
Visible Light ◽  
Band Gap ◽  
Hydrothermal Method ◽  
One Step ◽  
The One ◽  
Co Doped

(Ba, Mg)-codoped Bi12GeO20 was successfully synthesized through the one-step hydrothermal method, and the band gap was greatly narrowed.

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