Partial oxidation of methane over phosphate

Zhen, Kaiji; Teng, C. W.; Bi, Yingli

doi:10.1007/bf02068020

Cited by 5 publications

(2 citation statements)

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“…Based on observed differences between catalysts, the formation of HCHO was not purely a gas phase process, and there was an influence from surface reactions. The same iron phosphate catalyst was studied further and cofeeding water increased formaldehyde formation, and the major product was formic acid …”

Section: High Temperature Gas Phase Selective Methane Oxidationmentioning

confidence: 99%

“…The same iron phosphate catalyst was studied further and cofeeding water increased formaldehyde formation, and the major product was formic acid. 137 In contrast to the selectivity switches regulated by reaction conditions, Sojka et al demonstrated a selectivity switch by chemical modification of a ZnO catalyst. 138 In the temperature range 500−850 °C, methane in air was oxidatively coupled to C 2 products and oxidized to CO. Doping with low amounts of equimolar concentrations of Cu 1+ and Fe 3+ switched the main product to formaldehyde, attributed to the Cu and Fe redox couples and the Lewis acid properties of Fe 3+ .…”

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confidence: 99%

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Methane Oxidation to Methanol

et al. 2022

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The direct transformation of methane to methanol remains a significant challenge for operation at a larger scale. Central to this challenge is the low reactivity of methane at conditions that can facilitate product recovery. This review discusses the issue through examination of several promising routes to methanol and an evaluation of performance targets that are required to develop the process at scale. We explore the methods currently used, the emergence of active heterogeneous catalysts and their design and reaction mechanisms and provide a critical perspective on future operation. Initial experiments are discussed where identification of gas phase radical chemistry limited further development by this approach. Subsequently, a new class of catalytic materials based on natural systems such as iron or copper containing zeolites were explored at milder conditions. The key issues of these technologies are low methane conversion and often significant overoxidation of products. Despite this, interest remains high in this reaction and the wider appeal of an effective route to key products from C–H activation, particularly with the need to transition to net carbon zero with new routes from renewable methane sources is exciting.

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Section: High Temperature Gas Phase Selective Methane Oxidationmentioning

confidence: 99%

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confidence: 99%