Thiophenic sulfur
WebJan 20, 2015 · Sulfur compounds were methylated to sulfonium salts by AgBF4 and CH3I, then the polar salts were separated by precipitation from petroleum matrix. The thiophenic and sulfidic sulfonium salts were sequentially demethylated with 7-azaindole and 4 … WebThiophenic compounds constitute a class of sulfur compounds derived by thiophene, containing at least one thiophenic ring. Their presence in fuels (crude oil, etc.) is important and can reach 3% m/m. The combustion of fuels leads to the formation of sulfur oxides a severe source of environmental pollution issues, such as acid rain with adverse effects …
Thiophenic sulfur
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WebNov 15, 2024 · Request PDF Boosting the Adsorption Performance of Thiophenic Sulfur Compounds with a Multimetallic Dual Metal–Organic Framework Composite Adsorptive desulfurization over metal-organic ... WebApr 1, 2006 · In FCC gasolines, thiophenic compounds alkylation with olefins of the feed followed by distillation of heavy sulfur compounds is a good alternative to classical hydrodesulfurization to eliminate ...
WebTheir adsorption behaviors for thiophenic sulfurs in model diesel oils are systematically investigated at mild temperatures and follow the order Cu-BTC > Cr-BDC > Cr-BTC ≫ Cu-BDC. Meanwhile, the adsorption capacity of different sulfur compounds follows the order … WebJun 25, 2024 · In order to investigate the competitive adsorption between aromatics and thiophenic sulfur compounds, 10 wt% of tert-butyl benzene was mixed with model fuel containing 550 ppmw thiophene in ...
WebJun 1, 2013 · The thiophenic sulfur compounds started decomposing when the temperature rose above 800°C (Calkins, 1987); they decomposed into sulfur radicals first, and then the products might have reacted with other sulfur-containing compounds. Consequently, the amount of the benzothiophene and dibenzothiophene decreased as the temperature rose … WebApr 16, 2012 · Thiophenic sulfur is alkylated in the OATS reactor employing acidic catalysts. After the reactor, the feed is sent to a conventional distillation column where it is separated into a light sulfur-free naphtha and a heavy sulfur-rich stream. The light naphtha is directly sent to the gasoline pool and the heavy stream is preferably hydrotreated.
WebMar 6, 2012 · Thiophenic compounds are the refractory organosulfur compounds remaining in the transportation fuels, and their removal from liquid fuels has become increasingly important.
Web刘春红，方礼理fcc汽油加氢脱硫催化剂研究进展刘春红1，方礼理2（1. 西安石油大学， 陕西 西安 710065； 2. 西安凯立化工有限 penny stocks to watch novemberWebSep 15, 2006 · Copper oxide adsorbents are normally quite unreactive with thiophenic sulfur compounds, while in contrast, they readily react with and adsorb mercaptans (also known as thiols), see for example the recent work by King et. al. in Ref. [1]. It is well known that Cu-based adsorbents are less efficient than Ni-based, and often sulfur is observed to ... penny stocks to watch mayWebAdsorptive desulfurization (ADS) using activated carbon (AC) as adsorbent presents competitive potential in separating thiophenic sulfur from liquid fuels with high selectivity under mild operation conditions. It is also a highly economic remedy in ultra-low sulfur content situations. Most importantly, a suitable f toby summer heights highWebMar 23, 2024 · The templated preparation of hollow nanomaterials has received broad attention. However, many templates are expansive, environmentally-harmful, along with involving a complicated preparation process. Herein, we present a cost-effective, environmentally friendly and simple approach for making carbonaceous particles which … toby summer truistWebEnter the email address you signed up with and we'll email you a reset link. toby sumpter blogWebJun 1, 2013 · The thiophenic sulfur compounds started decomposing when the temperature rose above 800°C (Calkins, 1987); they decomposed into sulfur radicals first, and then the products might have reacted with other sulfur-containing compounds. Consequently, the … penny stocks to watch mondayWeb2 days ago · Consequently, in the BDS process, the thiophenic sulfur compound serves only as the sole sulfur source for bacteria growth, and the calorific value of the fuel is preserved by the final end ... toby summer of the monkeys