37 Compared to the unpromoted sample, the ratios of promoted ones basically showed an increasing trend, which may be due to the fact that the promoted catalysts inhibit the RWGS process.
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Effects of Promoters on the Structure, Performance, and Carbon Deposition of Ni-Al<sub>2</sub>O<sub>3</sub> Catalysts for CO<sub>2</sub>-CH<sub>4</sub> Reforming.
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The sentences
The TG profiles of all of the used catalysts first show a decreasing trend and then an increasing one before 500 °C, and after which the profiles decrease again.