Effects of manganese incorporation on the morphology, structure and cytotoxicity of spherical bioactive glass nanoparticles
บทความในวารสาร
ผู้เขียน/บรรณาธิการ
กลุ่มสาขาการวิจัยเชิงกลยุทธ์
ไม่พบข้อมูลที่เกี่ยวข้อง
รายละเอียดสำหรับงานพิมพ์
รายชื่อผู้แต่ง: Barrioni B.R., Naruphontjirakul P., Norris E., Li S., Kelly N.L., Hanna J.V., Stevens M.M., Jones J.R., Pereira M.D.M.
ผู้เผยแพร่: American Chemical Society
ปีที่เผยแพร่ (ค.ศ.): 2019
วารสาร: Energy and Fuels (0887-0624)
Volume number: 547
หน้าแรก: 382
หน้าสุดท้าย: 392
จำนวนหน้า: 11
นอก: 0887-0624
eISSN: 1520-5029
ภาษา: English-Great Britain (EN-GB)
ดูในเว็บของวิทยาศาสตร์ | ดูบนเว็บไซต์ของสำนักพิมพ์ | บทความในเว็บของวิทยาศาสตร์
บทคัดย่อ
Catalytic tar steam reforming over char was conducted in a two-stage fixed-bed reactor. This reactor was divided into two zones: the "devolatilization zone", where the biomass tar is released, and the "tar reforming zone", where the tar and char are contacted and reformed into products. The temperature of the tar reforming zone was maintained at 800 ฐC for all experiments. The effects of devolatilization temperature (600, 700, and 800 ฐC) and biomass type (rice straw, RS, and Leucaena leucocephala wood, LN) on the catalytic performance of char during tar steam reforming were investigated. Biomass chars and coal/biomass blended chars (C/RS and C/LN) were prepared as the catalyst for tar steam reforming. Results revealed that compared with biomass chars, C/RS and C/LN performed a better catalytic activity in tar steam reforming, resulting in a higher carbon conversion into gas and a lower carbon conversion into tar. The main catalytic roles of the coal/biomass blended char can be explained by the improvement of the Brunauer-Emmett-Teller (BET) surface area during co-pyrolysis and the existence of alkali and alkaline earth metallic species (AAEMs), particularly K, as the stable silicate form. Considering the effect of devolatilization temperature, the tar released at 700 ฐC can be mostly converted among all types of char. Tars containing the mixture of phenolic compounds (i.e., phenol and methyl phenol) and aromatic compounds (i.e., naphthalene and methyl naphthalene) were favorable to reform over the char surface to achieve the relatively high tar conversion. In addition, LN tar was easier to convert than the RS tar in both cases of with and without char because of the lower proportion of a stable aromatic compound. The outcome of this study can be beneficial for the design and operation of the tar removal process during biomass gasification using the low-cost carbon-based catalyst. Copyright ฉ 2019 American Chemical Society.
คำสำคัญ
ไม่พบข้อมูลที่เกี่ยวข้อง
ติดต่อสอบถามเพิ่มเติมได้ที่