scholarly journals High yield synthesis of high-silica chabazite by combining the role of zeolite precursors and tetraethylammonium: SCR of NOx

2015 ◽  
Vol 51 (49) ◽  
pp. 9965-9968 ◽  
Author(s):  
Nuria Martín ◽  
Manuel Moliner ◽  
Avelino Corma
Keyword(s):  
High Yield ◽  
High Solid ◽  
Rational Combination ◽  
High Silica ◽  
Scr Of Nox ◽  
Zeolite Precursors

The synthesis of chabazite with high solid yields is achieved by the rational combination of directing effects of a source of Si and Al coming from USY zeolites and the inexpensive tetraethylammonium.

scholarly journals High-silica nanocrystalline Beta zeolites: efficient synthesis and catalytic application

2016 ◽  
Vol 7 (1) ◽  
pp. 102-108 ◽  
Author(s):  
Raquel Martínez-Franco ◽  
Cecilia Paris ◽  
Marta E. Martínez-Armero ◽  
Cristina Martínez ◽  
Manuel Moliner ◽  
...  
Keyword(s):  
Efficient Synthesis ◽  
High Solid ◽  
Catalytic Application ◽  
Beta Zeolites ◽  
High Silica ◽  
Synthesis Methodology ◽  
20 Nm

An efficient synthesis methodology to obtain homogeneous nanosized high-silica Beta zeolites (∼10–20 nm) with high solid yields (above 95%) using simple alkyl-substituted flexible dicationic OSDAs is described.

On the role of organic nitrogen-containing species as intermediates in the hydrocarbon-assisted SCR of NOx

2004 ◽  
Vol 54 (2) ◽  
pp. 69-84 ◽  
Author(s):  
Olivier Gorce ◽  
François Baudin ◽  
Cyril Thomas ◽  
Patrick Da Costa ◽  
Gérald Djéga-Mariadassou
Keyword(s):  
Organic Nitrogen ◽  
Scr Of Nox

Fine-Grained Structures Associated with Deformation Twin and Its Influence on Tensile Behaviours in a Cold-Rolled Fe-Ni Alloy

2006 ◽  
Vol 503-504 ◽  
pp. 895-900 ◽  
Author(s):  
Tatsuya Morikawa ◽  
Taku Moronaga ◽  
Kenji Higashida
Keyword(s):  
Deformation Twin ◽  
Liquid Nitrogen Temperature ◽  
Invar Alloy ◽  
High Yield ◽  
Fine Grained ◽  
Transmission Electron ◽  
Ni Alloy ◽  
Cold Rolled ◽  
Crystallographic Planes

Fine-grained structures in Fe-36mass%Ni Invar alloy have been investigated by using transmission electron microscopy (TEM). Particular attention has been paid on the role of deformation twinning in the formation of fine-grained structures and its influence on tensile stressstrain behaviours of rolled specimens. In Fe-Ni Invar alloy with a moderate stacking fault energy, deformation twin did not appear in usual cold-rolling at room temperature (RT), where a kind of cell walls was formed and the Cu-type texture was observed. On the other hand, twinning was occurred by rolling when specimens were cooled to liquid nitrogen temperature (LNT) immediately before the rolling. In such case, a fine lamellar structure was developed and the brass-type texture appeared. However, the lamella boundaries did not coincide with any crystallographic planes, and they were intersected with the bands of deformation twin. Specimens rolled by 90% in thickness reduction exhibited tensile stressstrain behaviours similar to those observed in specimens with SPD structures. In particular, specimens rolled at LNT showed high yield strengths and non-uniform deformation.

scholarly journals Organik Matter: It’s Role in Sustainable Farming of Sugarcane

Perspektif ◽  
2016 ◽  
Vol 14 (1) ◽  
pp. 61
Author(s):  
Djajadi Djajadi
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Fertility ◽  
Green Manure ◽  
Organic Fertilizer ◽  
Soil Health ◽  
High Yield ◽  
Cane Yield ◽  
Sustainable Farming

<p class="Default">ABSTRACT</p><p class="Default">Organik matter has an important role in determining soil health of sugarcane, i.e. soil capacity to support sugarcane to produce sustainable high yield. Soil organic matter influences soil physical, chemical, and biological properties, so that a consequence of declining soil organic matter is poorer soil fertility and lower yield. This paper has an objective to elucidate the important role of organic matter on sustainable farming of sugarcane. The important role of organic matter in soil fertility has been known for a long time before Green Revolution concept was introduced. With more intensity in sugarcane farming and more increasing of sugar demand, application of organic fertilizer started to be substituted by chemical fertilizer. Using green manure and/or biofertilizer has a chance to be spread out to the farmers due to more practical and more efficient than solid organik fertilizer, such as dung manure or compost. Future research should be focusing on the efectivity of green manure and or biofertilzer sources in improving soil fertility and cane yield, minimizing soil pathogen, reducing soil erosion of sugar cane land monoculture, and improving awareness of farmers about soil degradation as consequences of sugarcane monoculture planting for years.</p><p class="Default">Keywords: Organic matter, sugarcane, soil health sustainable farming</p><p class="Default"> </p><p class="Default"><strong>Bahan Organik: Peranannya dalam Budidaya Tebu Berkelanjutan</strong></p><p class="Default">ABSTRAK</p><p class="Default">Bahan organik tanah berperan penting dalam menentukan kesehatan tanah tebu, yaitu kapasitas tanah yang dapat mendukung produksi tebu yang tinggi secara berkelanjutan. Kadar bahan organik tanah mempengaruhi sifat fisik, kimia dan biologi tanah. Paper ini bertujuan untuk menguraikan tentang peranan bahan organik dalam memperbaiki sifat fisik, kimia dan biologi tanah pertanaman tebu. Pentingnya peran bahan oganik tersebut sudah disadari dari dulu, sehingga sebelum revolusi hijau penggunaan pupuk organik sudah umum dilakukan petani. Dengan semakin intensifnya budidaya tebu dan semakin meningkatnya kebutuhan gula, pemanfaatan pupuk organik sudah jarang dilakukan. Diperlukan usaha untuk meningkatkan dan mempertahankan kadar bahan organik pada lahan tebu, antara lain berupa gerakan masal dalam bentuk gerakan nasional melalui program aplikasi bahan organik. Pemanfaatan pupuk hijau dan/atau pupuk hayati berpeluang untuk diterapkan karena lebih praktis dan efisien daripada penambahan pupuk organik padat. Penelitian ke depan perlu difokuskan untuk mengkaji jenis-jenis pupuk organik dan pupuk hayati yang efektif memperbaiki kesuburan, dalam menekan serangan penyakit, meminimalkan erosi pada lahan-lahan tebu monokultur, dan meningkatkan kesadaran petani tebu tentang terjadinya degradasi lahan akibat penanaman tebu yang terus menerus.</p><p class="Default">Kata kunci: Bahan organik, tebu, kesehatan tanah, budidaya berkelanjutan</p><p class="Default"> </p>

Unraveling the role of cobalt in the direct conversion of CO2 to high-yield liquid fuels and lube base oil

2021 ◽  
pp. 121041
Author(s):  
Heuntae Jo ◽  
Muhammad Kashif Khan ◽  
Muhammad Irshad ◽  
Malik Waqar Arshad ◽  
Seok Ki Kim ◽  
...  
Keyword(s):  
Direct Conversion ◽  
Liquid Fuels ◽  
High Yield ◽  
Base Oil

Role of tetrabutylammonium bromide in formation of structure of high-silica zeolite TsVK-1

1986 ◽  
Vol 22 (5) ◽  
pp. 234-236 ◽  
Author(s):  
G. D. Chukin ◽  
B. L. Khusid ◽  
G. V. Vasilenko ◽  
G. B. Belan
Keyword(s):  
Tetrabutylammonium Bromide ◽  
High Silica

A Highly Effective Catalyst of Sm-MnOx for the NH3-SCR of NOx at Low Temperature: Promotional Role of Sm and Its Catalytic Performance

ACS Catalysis ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 5973-5983 ◽  
Author(s):  
Dongmei Meng ◽  
Wangcheng Zhan ◽  
Yun Guo ◽  
Yanglong Guo ◽  
Li Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Catalytic Performance ◽  
Effective Catalyst ◽  
Nh3 Scr ◽  
Highly Effective ◽  
Scr Of Nox

scholarly journals Role of the different copper species on the activity of Cu/zeolite catalysts for SCR of NOx with NH3

2014 ◽  
Vol 147 ◽  
pp. 420-428 ◽  
Author(s):  
Beñat Pereda-Ayo ◽  
Unai De La Torre ◽  
María José Illán-Gómez ◽  
Agustín Bueno-López ◽  
Juan R. González-Velasco
Keyword(s):  
Zeolite Catalysts ◽  
Copper Species ◽  
Scr Of Nox
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