New nanostructured modified nickel-metal-nitride-molybdenum-cerium-magnesium-alumina catalyst useful for preparation of synthesis gas, which is useful as feed for Fischer-Tropsch synthesis to produce high value methanol
	BAL R; GAZI M J; SINGH G; KAISHYOP J; PANDA S; BORDOLOI A
	2023-08-04
专利权人	COUNCIL SCI & IND RES INDIA (COUI-C)
申请日期	2023-08-04
专利号	IN202311052529-A
成果简介	NOVELTY - A nanostructured modified nickel-metal-nitride-molybdenum-cerium-magnesium-alumina catalyst (I), is new. USE - Nanostructured modified nickel-metal-nitride-molybdenum-cerium-magnesium-alumina catalyst (I) useful for the preparation of synthesis gas (claimed), which is useful as feed for Fischer-Tropsch synthesis to produce high value methanol. ADVANTAGE - The catalyst (I) provides synthesis gas with high quality, improved coke resistance, high thermal stability and catalytic activity. The tri-metallic catalyst supported on metal oxides has improved prolonged activity, and resistance to coke deposition under dry methane reforming. The catalyst (I) has a durability of 500 hours reaction with a limited amount of coke deposition in the presence of 0.5% water. The feed conversion efficiency using the catalyst (I) is equal to or greater than 90%. The modification of the alumina support with cerium and magnesium gives the desirable stability to the catalyst against carbon deposition and catalyst agglomeration even at high temperature. The modification of the cerium-magnesium (Ce1Mg3)-alumina support with molybdenum gives the desirable stability to the catalyst against carbon deposition and catalyst agglomeration. The deposition of active metal particles on the molybdenum cerium magnesium (Mo5Ce1Mg3)-alumina support give the desirable stability and activity for the dry reforming of methane. A simple precipitation-deposition method was approached for the deposition of active metal particles over the modified alumina support. Formation of metal aluminate complex helped to sustain for a long time at high temperature. The size of the active metal particles derived from TEM images (average size 6 nm) is well suitable for reforming reaction with efficient coke resistance capacity. Addition of basic promoters like magnesium oxide enhanced the carbon dioxide adsorption which in further helped to remove the coke deposition. Use of oxygen capacity enhancer like ceria controlled the growth of inactive graphitic carbons. Molybdenum promotion limited the unusual methane activation and also the redox properties helped to mitigate the carbon deposition. All the compositions showed a desired syngas ratio 1:1 at 850 °C with efficient catalytic activity towards both the feed. Effect of trace amount of water also enhanced the catalytic activity by minimizing the coke deposition rate. The catalyst (I) have a prolonged lifetime that would be an advantage in industrial applications. DETAILED DESCRIPTION - A nanostructured modified nickel-metal-nitride-molybdenum-cerium-magnesium-alumina catalyst of formula (Ni4-10MxN1x/Mo5Ce1Mg3-alumina) (I), is new. (M = 1st coactive metal Ru; N1 = 2nd coactive metal Gd; and x = 0.5-1). INDEPENDENT CLAIMS are included for: (1) a process for the preparation of the catalyst (I); and (2) a process for the preparation of synthesis gas using the catalyst (I), which involves mixing halloysite and nitric acid with the catalyst (I) to obtain an extrudate, drying the extrudate followed by electrically heating /calcinating at 800-850°C for 6-8 hours to obtain the extruded catalyst, converting methane and carbon dioxide in 1:1 mole% ratio via a dry-reforming reaction at 650-850° C, a pressure of 1-30 bar and gas hour space velocity of 10000-30000 mLg-1h-1 and a water variation of 1-2.5 mL using the extruded catalyst to synthesis gas (carbon monoxide and hydrogen).
IPC 分类号	B01J-023/755 ; B01J-023/76 ; B01J-037/02 ; C01B-003/40
国家	印度
专业领域	能源矿产
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/20972
专题	中国科学院新疆生态与地理研究所
作者单位	COUNCIL SCI & IND RES INDIA (COUI-C)
推荐引用方式 GB/T 7714	BAL R,GAZI M J,SINGH G,et al. New nanostructured modified nickel-metal-nitride-molybdenum-cerium-magnesium-alumina catalyst useful for preparation of synthesis gas, which is useful as feed for Fischer-Tropsch synthesis to produce high value methanol. IN202311052529-A[P]. 2023.

条目包含的文件
条目无相关文件。

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。