scholarly journals One-pot two-step process for direct propylene oxide production catalyzed by bi-functional Pd(Au)@TS-1 materials

2016 ◽  
Vol 523 ◽  
pp. 73-84 ◽  
Author(s):  
Alejandro Prieto ◽  
Miguel Palomino ◽  
Urbano Díaz ◽  
Avelino Corma
Keyword(s):  
Propylene Oxide ◽  
One Pot ◽  
Step Process ◽  
Oxide Production

Synthesis and Characterization of Phosphorus-Containing Flame Retardant Polyamide 66

2020 ◽  
Vol 977 ◽  
pp. 102-107
Author(s):  
Yu Lei Zheng ◽  
Shuang Chen ◽  
Jia Hui Wang ◽  
Ru Xiao
Keyword(s):  
Flame Retardant ◽  
Oxygen Index ◽  
Mechanical And Thermal Properties ◽  
Index Test ◽  
Polyamide 66 ◽  
Scanning Calorimetry ◽  
One Pot ◽  
Limiting Oxygen Index ◽  
Step Process ◽  
Phosphorus Containing

Polyamide 66 (PA66) benefits from excellent mechanical properties and good chemical resistance, which enabled wide application of this material in various industrial fields; however, it suffers from high flammability. Generally, preparation of a flame retardant PA from a reactive flame retardant involves a two-step process. In this study, the flame retardant PA66s (FRPA66s) are synthesized via a one-pot melt copolycondensation route by using a reactive phosphorus-containing flame retardant (FR-B). Then, molecular weight, some mechanical and thermal properties along with flame retardant properties of FRPA66s were investigated by gel permeation chromatography (GPC), instron material testing, differential scanning calorimetry (DSC), thermogravimetry (TG) analysis, vertical burning test (UL 94), and limiting oxygen index test (LOI) techniques. The experimental results confirmed that FRPA66s synthesized by the one-pot method have very similar properties compared to those obtained via the two-step process. Moreover, the prepared materials showed good non-flammability behavior with limiting oxygen index value of over 30% and a vertical burning test result of V-0 rating.

One-pot conversion of CO2 and glycerol to value-added products using propylene oxide as the coupling agent

2012 ◽  
Vol 14 (6) ◽  
pp. 1743 ◽  
Author(s):  
Jun Ma ◽  
Jinliang Song ◽  
Huizhen Liu ◽  
Jinli Liu ◽  
Zhaofu Zhang ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Coupling Agent ◽  
Value Added ◽  
One Pot ◽  
Value Added Products

A one-pot process for the microwave-assisted synthesis of 7-substituted pyrazolo[1,5-a]pyrimidine

RSC Advances ◽  
2016 ◽  
Vol 6 (4) ◽  
pp. 3301-3306 ◽  
Author(s):  
Ibtissam Bassoude ◽  
Zahira Tber ◽  
El Mokhtar Essassi ◽  
Gérald Guillaumet ◽  
Sabine Berteina-Raboin
Keyword(s):  
Microwave Assisted Synthesis ◽  
Efficient Synthesis ◽  
One Pot ◽  
Step Process ◽  
Microwave Assisted ◽  
Decarboxylation Reaction

An efficient synthesis of 7-substituted pyrazolo[1,5-a]pyrimidines using a one-pot, two-step process via Pd-catalyzed direct CH-arylation followed by a saponification–decarboxylation reaction is reported.

scholarly journals One-pot sequential synthesis of isocyanates and urea derivatives via a microwave-assisted Staudinger–aza-Wittig reaction

2013 ◽  
Vol 9 ◽  
pp. 2378-2386 ◽  
Author(s):  
Diego Carnaroglio ◽  
Katia Martina ◽  
Giovanni Palmisano ◽  
Andrea Penoni ◽  
Claudia Domini ◽  
...  
Keyword(s):  
Wittig Reaction ◽  
Scale Up ◽  
Alkyl Halides ◽  
Secondary Amines ◽  
Nucleophilic Substitutions ◽  
One Pot ◽  
Urea Derivatives ◽  
Step Process ◽  
Microwave Assisted ◽  
Simple Filtration

A fast and efficient protocol for the synthesis of N,N'-disubstituted urea derivatives from alkyl halides and primary or secondary amines has been developed. The synthetic pathway combines nucleophilic substitutions and a Staudinger–aza-Wittig reaction in the presence of polymer-bound diphenylphosphine under 14 bar of CO2 pressure and has been performed in a one-pot two-step process. The protocol has been optimized under microwave irradiation and the scale-up experiment has been conducted under conventional conditions in a Parr reactor. The final compounds were isolated after simple filtration in almost quantitative overall yields which makes this procedure facile and rapid to execute.

Low-waste Technology of Obtaining Epoxy Compounds. Part 2. The Technology of Propylene Oxide Production by Peroxide Method

2018 ◽  
Vol 22 (1) ◽  
pp. 4-9
Author(s):  
M.R. Flid ◽  
M.A. Trushechkina ◽  
S.V. Leont’eva ◽  
V.R. Flid ◽  
A.V. Sulimov ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Oxide Production ◽  
Peroxide Method

Synthesis of Eco-Friendly High PL Lifespan Manganese-Doped CuInZnS/ZnS QDs for White LED Applications

2020 ◽  
Vol 20 (10) ◽  
pp. 6286-6294
Author(s):  
Mukerem Helil Abib ◽  
Taotao Chen ◽  
Enze Xu ◽  
Man Wang ◽  
Yang Jiang
Keyword(s):  
White Light ◽  
Surface Passivation ◽  
Environmentally Friendly ◽  
White Led ◽  
One Pot ◽  
Step Process ◽  
The One ◽  
Mn Doped

Environmentally friendly and long PL lifespan Mn-doped CuInZnS (Mn:CIZS) and CuInZnS/ZnS (Mn:CIZS/ZnS) QDs, with respective red and yellow emissions, were synthesized using nontoxic precursors via a facile dual-step process based on the one-pot method. The resulting Mn:CIZS and Mn:CIZS/ZnS QDs exhibited confirmed strong red and yellow photoluminescence emissions at approximately 654 nm and 580 nm, respectively. The measured PL decay lifespan for the Mn: CIZS QDs is 2.52 μs due to well-organized surface passivation through the ZnS shell; the average PL lifespan for the Mn:CIZS/ZnS QDs is extended to 6.28 μs. Moreover, the WLEDs were composed of the Mn:CIZS/ZnS QDs. The resulting WLEDs offered admirable optical attributes, such as an excellent Ra of 89, a low Tc of 5075 K and radiant white light emanation at 60 mA functional current. Therefore, the outputs highlight the Mn:CIZS/ZnS QDs as hopeful cadmium-free resources for the interest of optoelectronics exploration.

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