Kumar, Dheeraj and Ch, Subrahmanyam
(2018)
NTP ASSISTED SINGLE STEP METHANE CONVERSION TO METHANOL OVER Cu/γ-AL2O3 CATALYST MODIFIED BY ZnO, ZrO2 AND MgO AS PROMOTERS.
Masters thesis, Indian Institute of Technology, Hyderabad.
Abstract
Methane, a potential greenhouse gas can be converted to an alternative fuel, methanol in a single step
by NTP
-
DBD reactor at ambient condition through high energy electron impact, where air was used as
an oxidant. Present experiment employs a plasma
-
catal
yst combination system to trap the synergy
condition due to catalyst action and uniform surface discharge. The influence of the reaction condition
(power, CH
4
/Air mole ratio) and supported metal catalysts was investigated in terms of the conversion
of the
feed gases, selectivity and yield of the products and the energy efficiency of the plasma process.
During the present study, CuO/γ
-
Al
2
O
3
and modified by metal oxides (ZnO, ZrO
2
and MgO) catalysts
were prepared by impregnation as the promoter modification
leads to the high dispersion of the small
metal particles over support material and hence improves the catalytic activity. Compared to the non
-
catalytic plasma reaction, combination of plasma
-
catalyst system gave reliable increment on both CH4
conversion a
nd CH
3
OH selectivity. The highest CH
4
conversion of ~11% obtained from CMgA catalyst
and the highest methanol selectivity of 28.3% obtained from CZrA catalyst
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