scholarly journals A new dynamic N2O reduction system based on Rh/ceria–zirconia: from mechanistic insight towards a practical application

2021 ◽  
Author(s):  
Yixiao Wang ◽  
Jorrit Postuma de Boer ◽  
Michiel Makkee
Keyword(s):  
Practical Application ◽  
N2o Reduction ◽  
Simultaneous Reduction ◽  
Industrial Plants ◽  
Mechanistic Insight ◽  
Reduction System

Simultaneous reduction of N2O in the presence of co-existing oxidants, especially NO, from industrial plants, is a challenging task.

Development of a Simultaneous Reduction System of NOx and Particulate Matter for Light-Duty Truck

2004 ◽  
Author(s):  
Akira Shoji ◽  
Shinji Kamoshita ◽  
Tetsu Watanabe ◽  
Toshiaki Tanaka ◽  
Masahiko Yabe
Keyword(s):  
Particulate Matter ◽  
Simultaneous Reduction ◽  
Light Duty ◽  
Reduction System ◽  
Light Duty Truck

scholarly journals Silicon-coordinated nitrogen-doped graphene as a promising metal-free catalyst for N2O reduction by CO: a theoretical study

RSC Advances ◽  
2018 ◽  
Vol 8 (40) ◽  
pp. 22322-22330 ◽  
Author(s):  
Anchalee Junkaew ◽  
Supawadee Namuangruk ◽  
Phornphimon Maitarad ◽  
Masahiro Ehara
Keyword(s):  
Co Oxidation ◽  
Theoretical Study ◽  
N2o Reduction ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Mild Conditions ◽  
Mechanistic Insight ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Insight Into

Mechanistic insight into the N2O reduction and CO oxidation on SiN4G is reported in this theoretical study. The high reactive and selective SiN4 center leads this metal-free catalyst as a promising catalyst for this reaction under mild conditions.

scholarly journals Obtaining formaldehyde on a new catalytic system

2018 ◽  
Vol 80 (2) ◽  
pp. 275-282
Author(s):  
I. N. Shumkova ◽  
T. S. Linkova ◽  
D. N. Zemskii ◽  
O. V. Khabibrakhmanov
Keyword(s):  
Oxidative Dehydrogenation ◽  
Catalytic System ◽  
Raw Materials ◽  
Process Temperature ◽  
Energy Costs ◽  
Practical Application ◽  
Technological Parameters ◽  
Industrial Plants ◽  
Oxidation Of Methanol ◽  
The Cost

Formaldehyde is widely used in many fields of industry. The increase in the need for formaldehyde led to an increase in scientific research, the purpose of which is to obtain the greatest yield of the product (formaldehyde) with minimal costs for raw materials, catalyst and its regeneration, energy carriers, etc. At industrial plants for the production of formaldehyde by oxidative dehydrogenation of methanol on the silver on pumice catalyst, the process temperature is maintained at 600 ° C. The process of obtaining formaldehyde by oxidation of methanol with air oxygen at the combination of catalysts "silver" and "silver on pumice" in the temperature range of 250–450 °C is investigated. The results showed the possibility of practical application of the combined catalyst. Chemical and technological parameters of the process with the use of a new catalyst are slightly lower than production indicators, however, the temperature of the pilot process is 2 times lower - this will reduce not only the energy costs, but also increase the life of the catalyst and the cost of its regeneration.

Study of Improvements in NOx Reduction Performance on Simultaneous Reduction System of PM and NOx

2005 ◽  
Author(s):  
Shigeru Itabashi ◽  
Kuniaki Niimi ◽  
Shinji Kamoshita ◽  
Akira Shoji ◽  
Tomihisa Oda ◽  
...  
Keyword(s):  
Nox Reduction ◽  
Simultaneous Reduction ◽  
Reduction System

Study of a Simultaneous Reduction System of PM and NOx for Diesel Engine

2005 ◽  
Author(s):  
Kuniaki Niimi ◽  
Shigeru Itabashi ◽  
Tomihisa Oda ◽  
Shinji Kamoshita ◽  
Akira Shouji ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Simultaneous Reduction ◽  
Reduction System

Progress In The Practical Application Of Automated Image Analysis To Tem Negatives

1977 ◽  
Vol 35 ◽  
pp. 214-217
Author(s):  
F. A. Heckman ◽  
E. Redman ◽  
J.E. Connolly
Keyword(s):  
Image Analysis ◽  
Image Quality ◽  
Exposure Time ◽  
Image Contrast ◽  
Automated Image Analysis ◽  
Practical Application ◽  
Factors Affecting ◽  
High Image Quality ◽  
Qualitative Evidence ◽  
Comprehensive Study

In our initial publication on this subject1) we reported results demonstrating that contrast is the most important factor in producing the high image quality required for reliable image analysis. We also listed the factors which enhance contrast in order of the experimentally determined magnitude of their effect. The two most powerful factors affecting image contrast attainable with sheet film are beam intensity and KV. At that time we had only qualitative evidence for the ranking of enhancing factors. Later we carried out the densitometric measurements which led to the results outlined below.Meaningful evaluations of the cause-effect relationships among the considerable number of variables in preparing EM negatives depend on doing things in a systematic way, varying only one parameter at a time. Unless otherwise noted, we adhered to the following procedure evolved during our comprehensive study:Philips EM-300; 30μ objective aperature; magnification 7000- 12000X, exposure time 1 second, anti-contamination device operating.

Arylation of enelactams using TIPSOTf: reaction scope and mechanistic insight

2021 ◽  
Author(s):  
Tomasz J. Idzik ◽  
Zofia M. Myk ◽  
Łukasz Struk ◽  
Magdalena Perużyńska ◽  
Gabriela Maciejewska ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Multinuclear Nmr ◽  
Mechanistic Insight ◽  
Nmr Study ◽  
Wide Range

Triisopropylsilyltrifluoromethanesulfonate can be effectively used for the arylation of a wide range of enelactams. The multinuclear NMR study provided deep insights into the reaction mechanism.

Fifth Edition: the New Standard

2000 ◽  
Vol 5 (6) ◽  
pp. 1-7
Author(s):  
Christopher R. Brigham ◽  
James B. Talmage ◽  
Leon H. Ensalada
Keyword(s):  
Musculoskeletal System ◽  
Medical Information ◽  
Objective Assessment ◽  
Scientific Data ◽  
Practical Application ◽  
Fourth Edition ◽  
Appropriate Use ◽  
Medical Evaluation ◽  
Single Set

Abstract The AMA Guides to the Evaluation of Permanent Impairment (AMA Guides), Fifth Edition, is available and includes numerous changes that will affect both evaluators who and systems that use the AMA Guides. The Fifth Edition is nearly twice the size of its predecessor (613 pages vs 339 pages) and contains three additional chapters (the musculoskeletal system now is split into three chapters and the cardiovascular system into two). Table 1 shows how chapters in the Fifth Edition were reorganized from the Fourth Edition. In addition, each of the chapters is presented in a consistent format, as shown in Table 2. This article and subsequent issues of The Guides Newsletter will examine these changes, and the present discussion focuses on major revisions, particularly those in the first two chapters. (See Table 3 for a summary of the revisions to the musculoskeletal and pain chapters.) Chapter 1, Philosophy, Purpose, and Appropriate Use of the AMA Guides, emphasizes objective assessment necessitating a medical evaluation. Most impairment percentages in the Fifth Edition are unchanged from the Fourth because the majority of ratings currently are accepted, there is limited scientific data to support changes, and ratings should not be changed arbitrarily. Chapter 2, Practical Application of the AMA Guides, describes how to use the AMA Guides for consistent and reliable acquisition, analysis, communication, and utilization of medical information through a single set of standards.

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