scholarly journals Nanometric Iridium Overlayer Catalysts for High-Turnover NH3 Oxidation with Suppressed N2O Formation

ACS Omega ◽  
2020 ◽  
Vol 5 (50) ◽  
pp. 32814-32822
Author(s):  
Masato Machida ◽  
Yurika Tokudome ◽  
Akihide Maeda ◽  
Tomoyo Koide ◽  
Taiki Hirakawa ◽  
...  
Keyword(s):  
High Turnover ◽  
N2o Formation ◽  
Nh3 Oxidation

New insight into N2O formation from NH3 oxidation over MnO /TiO2 catalyst

Fuel ◽  
2019 ◽  
Vol 254 ◽  
pp. 115719 ◽  
Author(s):  
Denghui Wang ◽  
Qi Yao ◽  
Chunhui Mou ◽  
Shien Hui ◽  
Yanqing Niu
Keyword(s):  
N2o Formation ◽  
Tio2 Catalyst ◽  
Nh3 Oxidation ◽  
Insight Into

scholarly journals Insight into Platinum Poisoning Effect on Cu-SSZ-13 in Selective Catalytic Reduction of NOx with NH3

Catalysts ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 796
Author(s):  
Huawang Zhao ◽  
Lei Han ◽  
Yujie Wang ◽  
Jiandong Zheng
Keyword(s):  
Catalytic Reduction ◽  
No Oxidation ◽  
Oxidation Reactions ◽  
Hydrothermal Aging ◽  
N2o Formation ◽  
Poisoning Effect ◽  
Nh3 Oxidation ◽  
Reduction Of Nox ◽  
Parallel Reactions ◽  
Insight Into

Platinum’s (Pt) poisoning effect on Cu-SSZ-13 and its regeneration were investigated. The Pt enhanced the parallel reactions, such as NH3 oxidation and NO oxidation reactions, which decreased the deNOx activities. In the temperature range below 330 °C, the deactivation of Cu-SSZ-13 by Pt poisoning was primarily caused by the overconsumption of NH3, due to the enhanced NH3-selective oxidation reaction, while the formation of NOx in NH3 oxidation and NO oxidation into NO2 further aggravated the degradation when the temperature was above 460 °C. The non-selective NH3 oxidation and non-selective NOx catalytic reduction reactions resulted in increased N2O formation over Pt-doped samples. The transformation of Pt0 into PtOx after hydrothermal aging recovered the deNOx activities of the Pt-poisoned samples.

Nanometric Platinum Overlayer to Catalyze NH3 Oxidation with High Turnover Frequency

ACS Catalysis ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 4677-4685 ◽  
Author(s):  
Masato Machida ◽  
Yurika Tokudome ◽  
Akihide Maeda ◽  
Yusuke Kuzuhara ◽  
Taiki Hirakawa ◽  
...  
Keyword(s):  
Turnover Frequency ◽  
High Turnover ◽  
Nh3 Oxidation

FAKTOR PERSONAL YANG BERHUBUNGAN DENGAN KOMITMEN ORGANISASI PERAWAT RSUD EMBUNG FATIMAH BATAM

2020 ◽  
Vol 5 (3) ◽  
pp. 875
Author(s):  
Asfri Sri Rahmadeni
Keyword(s):  
Organizational Commitment ◽  
Turnover Rate ◽  
Sampling Technique ◽  
Hospital Nurses ◽  
Test Results ◽  
Personal Factors ◽  
High Turnover ◽  
Chi Square ◽  
Cross Sectional ◽  
Chi Square Test

<p class="Normal1"><em>Commitment is the attitude or behavior of likes or dislikes shown by someone against the organization at work. Indonesia is recorded as a nurse who has a low organizational commitment (76%) so it harms services. This phenomenon in the hospital can be seen from the indicator of the high turnover rate of nurses which reaches 30.9% which exceeds the standard &lt;5%. Many factors affect organizational commitment. The purpose of this study was to analyze the Personal Factors Associated with Organizational Commitment of Hospital Nurses. This study is a cross-sectional analytic study and purposive sampling technique with a sample of 59 nurses. Chi-Square test results obtained personal factors that have a relationship with organizational commitment Nurse Hospital is age with p = 0,000 and education with p = 0,000, personal factors not related to organizational commitment are gender p = 1,053 and years of service with p = 1,147. Hospitals should conduct research/surveys on Organizational Commitment periodically as an evaluation material in the context of the organization's development and development in the future</em>.</p>

Detection of Metal Toxicity Using Natural Phytoplankton as Test Organisms in the Great Lakes

1993 ◽  
Vol 28 (1) ◽  
pp. 155-176
Author(s):  
Mohiddin Munawari ◽  
Milos Legner
Keyword(s):  
Great Lakes ◽  
Metal Toxicity ◽  
Structural Changes ◽  
System Response ◽  
Turnover Rates ◽  
High Turnover ◽  
Spectra Analysis ◽  
Test Organisms ◽  
Future Potential ◽  
Natural Phytoplankton

Abstract This paper presents an overview of techniques utilizing natural phytoplankton for the detection of metal-Induced stress in the Great Lakes. Both field and laboratory procedures are designed to evaluate either structural changes or functional response of test organisms. This up-to-date compendium provides a choice of techniques, which permits a holistic assessment of the stress caused by toxic metals. Recently introduced techniques, such as normalized size spectra analysis, flow cytometry, and the evaluation of a continuous-flow system response to metal toxicity, are discussed in more detail to explore their future potential. Owing to their key position in the food web, high turnover rates, abundance, and sensitivity to environmental perturbation, phytoplankton serve as reliable early warning indicators of ecosystem deterioration and its restoration.

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