Praxair等5家公司正研制一种称为离子传输膜的瓷膜以在1000℃左右的温度下从空气生产99．99％以上纯度的氧，并在催化剂存在下与甲烷反应生产合成气，预计合成气成本可下降20％－30％。这是美国能源部资助的，由空气产品及化学品公司牵头，耗资84D0万美元，计划用8年时间完成的 Five companies, including Praxair, are developing a porcelain membrane called an ion transport membrane to produce 99.99% purity oxygen from air at temperatures around 1000 ° C and react with methane in the presence of a catalyst to produce syngas that is expected Syngas costs can be reduced by 20% -30%. It is funded by the U.S. Department of Energy and led by Air Products and Chemicals, which cost 84 million U.S. dollars and are planned to be completed in eight years