Dry reforming of methane using Pd-based membrane reactors fabricated from different substrates
Dry reforming of methane using Pd-based membrane reactors fabricated from different substrates
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DOI：
10.1016/j.memsci.2013.02.029
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发表时间：
2013-05-15
影响因子：
9.5
通讯作者：
Li, K.
中科院分区：
文献类型：
--
作者：
Garcia-Garcia, F. R.;Soria, M. A.;Li, K.
在本研究中，研究了一种中空纤维膜反应器（HFMR）的性能和可行性，该反应器由填充催化剂床围绕Pd涂层Al2O3中空纤维膜组成，并与传统的不锈钢基Pd管状膜反应器（TMR）和传统的固定床反应器（FBR）进行了比较。与MRs相比，基于陶瓷的HFMR具有几个优点，例如超薄Pd膜的沉积以及通过模块配置扩大整个多功能过程的可能性。在450℃的甲烷干重整（MDR）反应中得到的结果表明，虽然使用HFMR的CH4转化率与催化TMR几乎相同，但在HFMR中沉积Pd层所需的Pd量比TMR少15倍。此外，使用HFMR的CH4转化率比传统快堆高72%，比热力学平衡高34%。此外，在525℃下，在HFMR的管腔侧使用100 ml/min的扫气，实现了高纯度无cox的h -2生产（10.5 ml/mg h）。(c) 2013 Elsevier B.V.版权所有
In this study, performance and feasibility of a hollow fibre membrane reactor (HFMR), consisting of a packed catalyst bed around a Pd coated Al2O3 hollow fibre membrane, has been studied and compared with both conventional Pd based tubular membrane reactor (TMR) fabricated from a stainless steel substrate and traditional fixed-bed reactor (FBR). The ceramic based HFMR presents several advantages over MRs such as the deposition of ultra thin Pd membranes and the possibility to scale up the whole multifunctional process by module configuration. The results obtained at 450 degrees C during the methane dry reforming (MDR) reaction showed that, although CH4 conversion using the HFMR was almost the same as that of a catalytic TMR, the amount of Pd employed for the Pd layer deposition in the HFMR was fifteen times less than that in TMR. Moreover, the CH4 conversion using the HFMR was 72% higher than that in a traditional FBR and 34% higher than thermodynamic equilibrium. Also, a high purity COx-free H-2 production (10.5 ml/mg h) was achieved at 525 degrees C using a sweep gas of 100 ml/min in the lumen side of the HFMR. (c) 2013 Elsevier B.V. All rights reserved.