Direct Synthesis of 2,5-Diformylfuran from Carbohydrates Using High-Silica MOR Zeolite-Supported Isolated Vanadium Species

2017 ◽  
Vol 5 (11) ◽  
pp. 10029-10037 ◽  
Author(s):  
Wei Zhang ◽  
Tongsuo Meng ◽  
Junjie Tang ◽  
Wenxia Zhuang ◽  
Yu Zhou ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
High Silica ◽  
Vanadium Species

Direct synthesis of high-silica nano ZSM-5 aggregates with controllable mesoporosity and enhanced catalytic properties

RSC Advances ◽  
2016 ◽  
Vol 6 (101) ◽  
pp. 99129-99138 ◽  
Author(s):  
Hongyao Li ◽  
Yaquan Wang ◽  
Fanjun Meng ◽  
Hengbao Chen ◽  
Chao Sun ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Direct Synthesis ◽  
High Silica

In the absence of additional mesoporous template, high-silica nano-sized ZSM-5 aggregates have been rapidly synthesized by solid-like state conversion.

Direct synthesis of high-silica mordenite using seed crystals

2004 ◽  
Vol 76 (1-3) ◽  
pp. 1-7 ◽  
Author(s):  
Baowang Lu ◽  
Tomohiro Tsuda ◽  
Yasunori Oumi ◽  
Keiji Itabashi ◽  
Tsuneji Sano
Keyword(s):  
Direct Synthesis ◽  
Seed Crystals ◽  
High Silica

High silica zeolite Y nanocrystals by dealumination and direct synthesis

2004 ◽  
Vol 74 (1-3) ◽  
pp. 189-198 ◽  
Author(s):  
Brett A. Holmberg ◽  
Huanting Wang ◽  
Yushan Yan
Keyword(s):  
Zeolite Y ◽  
Direct Synthesis ◽  
High Silica

scholarly journals High-silica, heulandite-type zeolites prepared by direct synthesis and topotactic condensation

2015 ◽  
Vol 3 (24) ◽  
pp. 12890-12897 ◽  
Author(s):  
Joel E. Schmidt ◽  
Dan Xie ◽  
Mark E. Davis
Keyword(s):  
Thermal Stability ◽  
Direct Synthesis ◽  
High Silica ◽  
New Applications

High-silica heulandites prepared via topotactic condensation and direct synthesis that exhibit robust thermal stability, opening possibilities for new applications.

Variations in Surface Textures of Quartz Sand using Electron Microscopy

1970 ◽  
Vol 28 ◽  
pp. 494-495
Author(s):  
Eugene J. Amaral
Keyword(s):  
Electron Microscopy ◽  
Glass Industry ◽  
Glass Slide ◽  
Distilled Water ◽  
Early Paleozoic ◽  
Secondary Effects ◽  
Surface Textures ◽  
High Silica ◽  
Sand Deposit ◽  
The U.S

Examination of sand grain surfaces from early Paleozoic sandstones by electron microscopy reveals a variety of secondary effects caused by rock-forming processes after final deposition of the sand. Detailed studies were conducted on both coarse (≥0.71mm) and fine (=0.25mm) fractions of St. Peter Sandstone, a widespread sand deposit underlying much of the U.S. Central Interior and used in the glass industry because of its remarkably high silica purity.The very friable sandstone was disaggregated and sieved to obtain the two size fractions, and then cleaned by boiling in HCl to remove any iron impurities and rinsed in distilled water. The sand grains were then partially embedded by sprinkling them onto a glass slide coated with a thin tacky layer of latex. Direct platinum shadowed carbon replicas were made of the exposed sand grain surfaces, and were separated by dissolution of the silica in HF acid.

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