The Oxidative Bromination of Methane Over Rh/SiO2 Catalyst

Feng, Yagang; Liu, Zhen; Li, Wen Sheng; Wu, Ting; Zhou, Xiao Ping

doi:10.1007/s10562-008-9462-0

Cited by 15 publications

(8 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In view of halogen corrosion, methane oxidative bromination [5][6][7][8] and chlorination [9] were studied which use hydrobromic acid or HCl as reactants instead of halogens to reduce corrosion problem. Zhou et al [5,6,10] firstly reported methane oxidative bromination (OBM) reaction and developed Ru-and Rh-containing catalysts which showed high selectivity for CH 3 Br and excellent stability, but the uses of noble metals raise the production cost. We also reported FePO 4 /SiO 2 [8] for the OBM reaction, producing nearly equal-molar CH 3 Br and CO which could be used as feed stock for producing acetic acid.…”

Section: Introductionmentioning

confidence: 99%

Structure and phase analysis of one-pot hydrothermally synthesized FePO4-SBA-15 as an extremely stable catalyst for harsh oxy-bromination of methane

Wang

Lin

Ding

et al. 2013

Applied Catalysis A: General

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Structure and phase analysis of one-pot hydrothermally synthesized FePO4-SBA-15 as an extremely stable catalyst for harsh oxy-bromination of methane

Wang

Lin

Ding

et al. 2013

Applied Catalysis A: General

View full text Add to dashboard Cite

“…However, the integration of the alkane functionalization with the HBr recovery in a single step process via oxybromination reaction (Fig. 1, bottom left) is conceptually a more advanced strategy, as it enables process intensification and a theoretical 100% halogen atom efficiency [15][16][17][18][19] . In fact, the oxyhalogenation of light alkanes, which has a long history dating back to the first half of the 20 th century 20 , has been forecasted as the most cost-effective technology for natural-gas upgrading 1 .…”

mentioning

confidence: 99%

Catalyst design for natural-gas upgrading through oxybromination chemistry

et al. 2016

View full text Add to dashboard Cite

Natural gas contains large volumes of light alkanes, and its abundant reserves make it an appealing feedstock for value-added chemicals and fuels. However, selectively activating the C-H bonds in these useful hydrocarbons is one of the greatest challenges in catalysis. Here we report an attractive oxybromination method for the one-step functionalization of methane under mild conditions that integrates gas-phase alkane bromination with heterogeneously catalysed HBr oxidation, a step that is usually executed separately. Catalyst-design strategies to provide optimal synergy between these two processes are discussed. Among many investigated material families, vanadium phosphate (VPO) is identified as the best oxybromination catalyst, as it provides selectivity for CH3Br up to 95% and stable operation for over 100 hours on stream. The outstanding performance of VPO is rationalized by its high activity in HBr oxidation and low propensity for methane and bromomethane oxidation. Data on the oxybromination of ethane and propane over VPO suggest that the reaction network for higher alkanes is more complex.

show abstract

“…For the Rh/SiO 2 catalyst, methyl bromide was successfully produced from methane, oxygen, and hydrogen bromide [55]. The active bromine species were Br • radicals and Br surface species, which were formed by HBr oxidation.…”

Section: Oxidative Catalytic Halogenationmentioning

confidence: 99%

A Review of Methane Activation Reactions by Halogenation: Catalysis, Mechanism, Kinetics, Modeling, and Reactors

et al. 2020

View full text Add to dashboard Cite

Methane is the central component of natural gas, which is globally one of the most abundant feedstocks. Due to its strong C–H bond, methane activation is difficult, and its conversion into value-added chemicals and fuels has therefore been the pot of gold in the industry and academia for many years. Industrially, halogenation of methane is one of the most promising methane conversion routes, which is why this paper presents a comprehensive review of the literature on methane activation by halogenation. Homogeneous gas phase reactions and their pertinent reaction mechanisms and kinetics are presented as well as microkinetic models for methane reaction with chlorine, bromine, and iodine. The catalysts for non-oxidative and oxidative catalytic halogenation were reviewed for their activity and selectivity as well as their catalytic action. The highly reactive products of methane halogenation reactions are often converted to other chemicals in the same process, and these multi-step processes were reviewed in a separate section. Recent advances in the available computational power have made the use of the ab initio calculations (such as density functional theory) routine, allowing for in silico calculations of energy profiles, which include all stable intermediates and the transition states linking them. The available literature on this subject is presented. Lastly, green processes and the production of fuels as well as some unconventional methods for methane activation using ultrasound, plasma, superacids, and light are also reviewed.

show abstract

The Oxidative Bromination of Methane Over Rh/SiO2 Catalyst

Cited by 15 publications

References 7 publications

Structure and phase analysis of one-pot hydrothermally synthesized FePO4-SBA-15 as an extremely stable catalyst for harsh oxy-bromination of methane

Structure and phase analysis of one-pot hydrothermally synthesized FePO4-SBA-15 as an extremely stable catalyst for harsh oxy-bromination of methane

Catalyst design for natural-gas upgrading through oxybromination chemistry

A Review of Methane Activation Reactions by Halogenation: Catalysis, Mechanism, Kinetics, Modeling, and Reactors

Contact Info

Product

Resources

About