« Home « Kết quả tìm kiếm

Selective catalytic reduction

Tìm thấy 12+ kết quả cho từ khóa "Selective catalytic reduction"

Activity of γ-Al2O3 -based Mn, Cu, and Co oxide nanocatalysts for selective catalytic reduction of nitric oxide with ammonia

tailieu.vn

Activity of γ -Al 2 O 3 -based Mn, Cu, and Co oxide nanocatalysts for selective catalytic reduction of nitric oxide with ammonia. Abstract: Our studies on the selective catalytic reduction of NO (SCR-deNO) properties of M/ γ -Al 2 O 3 (M = Mn, Co, Cu) nanocatalysts are presented. The SCR activity followed the order Mn/ γ -Al 2 O 3 >. Co/γ - Al 2 O 3 . The TEM analysis revealed that the metal species have superior dispersion with less agglomeration and sintering on γ -Al 2 O 3 support.

Nghiên cứu cơ chế của phản ứng khử chọn lọc xúc tác NOx với CH4 và NH3 trên xúc tác Co-, Fe- và Mn-ZSM-5 =

312709-tt.pdf

dlib.hust.edu.vn

Dao Quoc Tuy Keyword: Selective Catalytic Reduction (SCR), Solid ion-exchange, Liquid ion-exchange, Co-ZSM-5, Mn-ZSM-5, Fe-ZSM-5, In situ FTIR. Motivation NOx emission from motor vehicle exhaust and power plants is becoming a serious problem in recent two decades. Hence, emission of NOx has been being tighten in recent 2 decades. The selective catalytic reduction (SCR) is one opened and potential direction to reduce NOx emissions.

Nghiên cứu cơ chế của phản ứng khử chọn lọc xúc tác NOx với CH4 và NH3 trên xúc tác Co-, Fe- và Mn-ZSM-5 =

312709.pdf

dlib.hust.edu.vn

Forzatti (1990), Fourier transform-infrared study of the adsorption and co-adsorption of nitric oxide, nitrogen dioxide and ammonia on vanadia-titania and mechanism of selective catalytic reduction, Applied Catalysis, 64, pp. (2006), Investigation of the selective catalytic reduction of NO by NH3 on Fe-ZSM-5 monolith catalysts, Applied Catalysis B: Environmental, 66, pp.

Bài giảng Công nghệ sản xuất các chất vô cơ cơ bản: Chương 3 - Nguyễn Văn Hòa

tailieu.vn

Phương pháp sử dụng xúc tác khử không chọn lọc (NSCR - Non-selective catalytic reduction). Xúc tác: Pd hoặc Pt.Rh trên chất mang nhôm hoặc sứ.. Nhiệt độ làm việc tối đa của xúc tác. 840 0 C - Các phản ứng chính:. Phương pháp sử dụng xúc tác khử chọn lọc (SCR - selective catalytic reduction). Xúc tác: V 2 O 5 , WO 3 , CuO và NiO trên chất mang Al 2 O 3 hoặc TiO 2. Nhiệt độ làm việc của xúc tác C - Các phản ứng chính:

Sythesize and investigate the catalytic activity of three-way catalysts based on mixed metal oxides for the treatment of exhaust gases from internal combustion engine

000000277048-3.pdf

dlib.hust.edu.vn

Applied Catalysis B: Environmental 103, pp. 79–84 Synthesize and investigate the catalytic activity of three-way catalysts based on mixed metal oxides for the treatment of exhaust gases from internal combustion engine Nguyen The Tien 98 95 W. Zhang (2012) A superior Ce-W-Ti mixed oxide catalyst for the selective catalytic reduction of NOx with NH3. Applied Catalysis B: Environmental 115– 116,pp E. Applied Catalysis B: Environmental 102, pp. Margolis (1966) Catalytic Oxidation of Hydrocarbons.

Sythesize and investigate the catalytic activity of three-way catalysts based on mixed metal oxides for the treatment of exhaust gases from internal combustion engine

000000277048-1.pdf

dlib.hust.edu.vn

SCR: selective catalytic reduction SG: sol-gel MC: mechanical FTIR: Fourier-Transform Infrared Eq.: equation T100: the temperature that correspond to the pollutant was completely treatment Tmax: The maxium peak temperature was presented as reference temperature of the maximum reaction rate in TG-DTA (DSC) diagram Vol.: volume Wt. weight Cat: catalyst at: atomic min.: minutes h: hour ppm: part per milllion ppb: part per billion Synthesize and investigate the catalytic activity of three-way catalysts

Synthesis and catalytic properties of catalyst system based on CeO2-ZrO2 for the complete oxidation of hydrocarbon to treat motorcycle's exhaust gases

000000253238.pdf

dlib.hust.edu.vn

COVNM: compound organic volatile not counting methane PCBs: polychlorinated biphenyls PCDDs: polychlorinated dibenzodioxins USA: United States of America HCMC: Ho Chi Minh City LEA: Low excess air OFA: Overfire air FRG: Flue gas recirculation LNB: Low NOx burner SNCR: Selective noncatalytic reduction SCR: Selective catalytic reduction A/F: air/fuel ratio TWC: three-way catalyst Cpsi: cell per square inch SULEV: super ultra low level vehicle ULEV: ultra low level vehicle CZ: mixtures of Cerium oxide

Khi Thai Dong Co

www.scribd.com

Bitum 2 XÚ C T Á C V À MÔI TR Ư NG Gi m t h i trên. ng c ơ x ă ng: Catalyse trois voies (TWC: Three Way Catalysts) (t  th  p k  70) 2. t i t r ng n  ng: Ré duction Catalytique S é lective (SCR: Selective Catalytic Reduction) CÁ C L O I. á nh l  a c ư ng b  c : Φ = 1. CH  T T H I TH  C  P Hì nh th à nh do ph  n  ng quang h ó a c  a NO v à HC v  i O 2  t  ng b ì nh l ư u. NG C Ơ X Ă NG TRUY  N TH  NG  Φ ≈ 1.

Dầu gốc

www.academia.edu

Điểm đông đặc (Pour point) hay điểm rót chảy: là nhiệt độ tại đó Dầu không chảy được (đông đặc) hay xảy ra ở xứ lạnh làm cho động cơ không khởi động được. (6) -SAE 10W-XX: Bảng phân loại độ nhớt Động cơ theo Hội các Nhà kỹ sư chế tạo Ô tô. 10W-XX là loại dầu đa cấp có độ nhớt thấp ở nhiệt độ thấp. (7) -SAPS: Sulphate Ash Phospho Sulfur: Hàm lượng tro có trong phụ gia Dầu nhớt động cơ là nguyên nhân gây tắc bộ lọc xúc tác khí thải (SCR- Selective Catalytic Reduction) theo Tiêu chuẩn khí thải Euro

Investigation of performances of commercial diesel oxidation catalysts for CO, C3H6, and NO oxidation

tailieu.vn

Oxidation and selective catalytic reduction of NO by propene over Pt and Pt:Pd diesel oxidation catalysts. Development and validation of a Pt-Pd diesel oxidation catalyst model. Platinum oxide formation and reduction during NO oxidation on a diesel oxidation catalyst – experimental results. Comparison of light-off performance of Pt-Pd/γ-Al 2 O 3 dual layer and dual brick diesel oxidation catalysts. Spatially resolving CO and C 3 H 6 oxidation reactions in a Pt/Al 2 O 3 model oxidation catalyst.

Nghiên cứu thiết kế, chế tạo bộ điều khiển phun urea cho bộ xử lý xúc tác SCR lắp trên động cơ diesel.

000000297098.pdf

dlib.hust.edu.vn

SCR Selective Catalytic Reduction (bộ xử lý xúc tác chọn lọc. NH3-SCR Bộ xử lý xúc tác chọn lọc sử dụng chất khử trực tiếp am-mô-ni-ắc - Urea-SCR Bộ xử lý xúc tác chọn lọc sử dụng chất khử gián tiếp am-mô-ni-ắc thông qua urea - HC-SCR Bộ xử lý xúc tác chọn lọc sử dụng chất khử hy-đrô các-bon - EtOH-SCR Bộ xử lý xúc tác chọn lọc sử dụng chất khử ê-ta-non - LNT Lean NOx Trap (Bộ hấp phụ NOx bằng bẫy hỗn hợp nghèo. CAT (Lò phản ứng xúc tác.

Introduction to Modeling and Control of Internal Combustion Engine Systems P2

tailieu.vn

1.5 Structure of the Text 19 In heavy-duty applications, where fuel economy is a top priority, lean de- N O x systems using a selective catalytic reduction (SCR) approach are an interesting alternative. This permits the engine to be calibrated at the high-efficiency/low-PM boundary of the trade-off curve (see Fig. These filters permit an engine cal- ibration on the high-PM/low-N O x side of the trade-off. 1.5 Structure of the Text.

Selective catalytic reduction of sulfur dioxide by carbon monoxide over iron oxide supported on activated carbon

tailieu.vn

Therefore, Fe 2 O 3 /AC is thought to be one of the best catalysts for the catalytic reduction of SO 2 with CH 4 to elemental sulfur.

Spectrophotometric analysis of stability of gold nanoparticles during catalytic reduction of 4-nitrophenol

tailieu.vn

Catalytic reduction of 4-nitrophenol by magnetically recoverable Au nanocatalyst. Journal of hazardous materials 2009. Recent advances in the liquid‐phase synthesis of metal nanostructures with controlled shape and size for catalysis. Kinetic analysis of catalytic reduction of 4-nitrophenol by metallic nanoparticles immobilized in spherical polyelectrolyte brushes. The Journal of Physical Chemistry C 2010. Colloidal gold-catalyzed reduction of ferrocyanate (III) by borohydride ions:.

Fabrication of silver nanoparticles in poly (N-isopropylacrylamide-co-allylacetic acid) microgels for catalytic reduction of nitroarenes

tailieu.vn

The UV spectra of the catalytic reduction of 4-NA possess an isosbestic point at 303 nm.. UV spectra of reduction of NB by Ag-(NIPAM-co-AAAc) hybrid microgels at 27 ◦ C.. UV spectra of reduction of 4-NA by Ag-p(NIPAM-co-AAAc) hybrid microgels at 27 ◦ C.. The UV-visible spectra of the catalytic reduction of 4-NP into 4-aminophenol (4-AP) are shown in Figure 9. Catalytic reduction of NB, 4-NA, and 4-NP was studied by using NaBH 4 in excess.

Ultrarapid catalytic reduction of some dyes by reusable novel erythromycin-derived silver nanoparticles

tailieu.vn

Monodispersed silver nanoparticles showed excellent and promising catalytic activity for reduction of 3 differently charged dyes (eosin B, methylene blue, and rose bengal) in the presence of NaBH 4 . The study revealed that 100% reduction of these dyes can be achieved efficiently in just 150–250 s. Glass-supported Ag(0) NPs (0.15 mg) were removed by washing sequentially and reused 5 times for catalytic reduction of these dyes at 10 µ M.

Wool-coiled bimetallic oxysulfide MoSrOS catalyst synthesis for catalytic reduction of toxic organic pollutants and heavy metal ions

tailieu.vn

Chen, A novel AgMoOS bimetallic oxysulfide catalyst for highly efficiency catalytic reduction of organic dyes and chromium (VI), Adv. Chen, Activated carbon supported CuSnOS catalyst with an efficient catalytic reduction of pollutants under dark condition, J

hhmt

www.scribd.com

Hoàn nguyên bằng chất xúc tác (Selective Catalytic Reduction-SCR) IV.Kết luận I/ Giới thiệu chung : 1.1/ Mô tả ngành sản xuất thép Gang thép giữ một vai trò rất quan trọng trong quá trình phát triển của nềnvăn minh nhân loại qua nhiều thiên niên kỷ do chúng được sử dụng rất rộngrãi trong các ngành nông nghiệp, xây dựng, sản xuất và phân phối nănglượng, chế tạo máy móc thiết bị, sản xuất hàng gia dụng và trong y học,trong an ninh quốc phòng …Cùng với than và giấy, gang thép là vật liệu cơ bản của

Fabrication and characterization of amidoxime-functionalized silica decorated with copper: A catalytic assembly for rapid reduction of dyes

tailieu.vn

The application of AFS-Cu as a catalyst for the catalytic reduction of methylene blue (MB) in aqueous media using NaBH 4 as reductant was evaluated. The reduction of MB followed pseudo-first-order kinetics and the rate constant (k) was 0.6224 min –1 . AFS-Cu was found to be a highly effective catalyst for MB reduction reaction and can be easily recovered and reused several times with no appreciable loss of catalytic activity..

Ranolazine-functionalized CuO NPs: Efficient homogeneous and heterogeneous catalysts for reduction of 4-nitrophenol

tailieu.vn

Size-tunable Ag nanoparticles immobilized in electrospun nanofibers: synthesis, characterization, and application for catalytic reduction of 4-nitrophenol. Strategic green synthesis, characterization and catalytic application to 4-nitrophenol reduction of palladium nanoparticles. Enhanced catalytic activity of CuPd alloy nanoparticles towards reduction of nitroaromatics and hexavalent chromium.