Shaanxi Coal and Chemical Technology Institute Co.

Xian, China

Shaanxi Coal and Chemical Technology Institute Co.

Xian, China
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Cheng G.,Dalian University of Technology | Cheng G.,University of Tasmania | Cheng G.,Shaanxi Coal and Chemical Technology Institute Co.
International Journal of Rock Mechanics and Mining Sciences | Year: 2017

A microseismic monitoring technique is adopted to investigate the distribution regularity of microseismic events released by the coal mining - induced roof rock mass along the vertical and horizontal directions in combination with mine geological data. On the basis of the quantity and energy distributions of the microseismic events recorded using the microseismic monitoring technique, a zoning method is first established for the roof strata movement in the vertical and horizontal directions. The vertically zoning method is then applied to analyze the microseismic monitoring results obtained in the Dongjiahe Coal Mine, which divides rock mass into six zones along the vertical direction, i.e. the caved zone, the block zone, the vertical fracture through-going zone, the vertical fracture zone, the separation zone and the continuous zone. The horizontally zoning model divides the roof strata movement into three zones, i.e. the calm zone, the generation zone impacted by working face and the historical generation zone. After that, based on the horizontally zoning model, a method is developed to determine the displacement angle using the microseismic monitoring data, which has been verified in the Dongjiahe Coal Mine. © 2017 Elsevier Ltd

Deng J.,China University of Technology | Cao Z.,China University of Technology | Zhang D.,Shaanxi Coal and Chemical Technology Institute Co. | Feng X.,China University of Technology
Chinese Journal of Chemical Engineering | Year: 2016

Work exchange is a promising innovative technology in recovering residual pressure energy. However, at the systematic level, the comprehensive utilization of different energy resources in an energy system has become an issue of concern. In this work, a systematic approach is proposed, one that successively integrates heat, work and adjusts operation parameters. A detailed procedure for building a heat-work coupling transfer network is provided. The synthesis mainly consists of constructing a work exchange sub-network with pinch analysis based on positive displacement type work exchangers. Simultaneously, another kind of sub-network based on turbine-type work exchangers is built as a schematic comparison. The influence of applying a positive displacement work exchanger on the system is investigated. Finally, as a case study, a renovation design of a typical rectisol process in the coal-water slurry gasification section of an ammonia plant is presented. The results show that the added work exchanger has little impact on the existing heat exchange sub-network. Moreover, extra pressure energy is recovered by coupling the transfer network. It is concluded that the heat-work systematic design is a promising and powerful method to use energy more efficiently. © 2016 Elsevier B.V.

Sun M.,Xijing University | Sun M.,Northwest University, China | Yao Q.,Shaanxi Coal and Chemical Technology Institute Co. | Ma X.,Northwest University, China
Energy Sources, Part A: Recovery, Utilization and Environmental Effects | Year: 2017

This study is the detailed publication concerning the origins of trace elements in Huanglong Jurassic coal. Forty-two coal samples were collected from Huanglong Jurassic coalfield. Twenty-two elements, including U, B, F, Hg, Be, Cd, Cr, Cu, Mn, Mo, Ni, Pb, V, Zn, Ba, Co, Ga, Sr, As, Se, Cl, and P, were determined. The element profiles were compared with the organic petrography, and the statistical analysis was also carried out to provide preliminary information for origins of the trace elements. The following conclusions were obtained: Cd, Cr, Cl, Ni, Zn, Co, Ga, Sr, As, Se, and B show inorganic affinity. Hg, V, Be, Cu, Pb, and F show generally vitrinite affinity, suggesting that their origins are associated with parenchymatous and woody tissues of roots, stems, barks, and leaves composed of cellulose and lignin. U shows inertinite affinity, which indicated that wood and leaf tissue weakly altered by decay or by biochemical alteration are the main origins of U. P, Mn, Mo, and Ba show overall mixed affinities, indicating the complex of biological origins. © 2017 Taylor & Francis Group, LLC

Wang L.,Tohoku University | Wang L.,Shaanxi Coal and Chemical Technology Institute Co. | Chen J.,Tohoku University | Watanabe H.,University of Tsukuba | And 4 more authors.
Applied Catalysis B: Environmental | Year: 2014

The Co-Fe/Mg/Al catalysts were prepared from the hydrotalcite-like compounds containing Co, Fe, Mg and Al, and applied to the steam gasification of biomass-derived tar. The characterization using TPR, TPO, XRD, H2 adsorption, TEM and EXAFS indicates that the Co-Fe/Mg/Al catalysts have a nanocomposite structure of the Co-Fe bcc alloy particles and the oxide particles of MgAl2O4-based solid solution after the reduction, where Co metal atoms can substitute partially Fe metal sites in bcc Fe metal regarding the Co-Fe bcc alloy particles. The composition of the Co-Fe/Mg/Al catalysts was optimized on the basis of the activity tests. The optimized Co-Fe/Mg/Al catalyst exhibited higher catalytic performance than the reported catalysts such as Co-Fe/α-Al2O3, Co/Mg/Al, Ni-Fe/Mg/Al in terms of activity and resistance to coke deposition. This behavior can be explained by the formation of the Co-Fe bcc alloy nanoparticles with rather uniform composition on MgAl2O4-based solid solution. © 2014 Elsevier B.V.

Yang Y.,Shaanxi Coal and Chemical Technology Institute Co. | Fu D.,Shaanxi Coal and Chemical Technology Institute Co. | Zhang Y.,Shaanxi Coal and Chemical Technology Institute Co. | Meng C.,Dalian University of Technology
Zeitschrift fur Anorganische und Allgemeine Chemie | Year: 2014

The mixed-ligand pentaborate, [Cu(C12N2H 8)2(C2H3O2)][B 5O6(OH)4]·C4H9NO (1), was synthesized and characterized by single-crystal X-ray diffraction, elemental analyses, powder X-ray diffraction, infrared spectroscopy, and thermogravimetric analysis. Two adjacent [B5O6(OH) 4]- polyborate anions are connected with each other by hydrogen bonds forming a novel zero-dimensional (0D) dimer {2[B 5O6(OH)4]-} which is further connected with [Cu(C12N2H8)2(C 2H3O2)]+ cations through hydrogen bonds to form a one-dimensional (1D) ribbon-like supramolecular structure with twenty-membered rings. The [Cu(C12N2H8) 2(C2H3O2)]+ cations are extended through π···π stacking interactions between the 1, 10-phenanthroline ligands forming a two-dimensional (2D) supramolecular network. The 1D supramolecular ribbons and the 2D supramolecular layers are further extended into a three-dimensional (3D) supramolecular framework through hydrogen-bonding interactions. Compound 1 is the first example of a borate where strong hydrogen bonds and π···π stacking interactions play important coordination roles in the formation of the 3D supramolecular framework. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Liu L.,Fudan University | Liu L.,Shaanxi Coal and Chemical Technology Institute Co. | Yu M.,Fudan University | Zhang Y.,Fudan University | And 2 more authors.
ACS Applied Materials and Interfaces | Year: 2014

In view of the biological significance of glycosylation for human health, profiling of glycoproteome from complex biological samples is highly inclined toward the discovery of disease biomarkers and clinical diagnosis. Nevertheless, because of the existence of glycopeptides at relatively low abundances compared with nonglycosylated peptides and glycan microheterogeneity, glycopeptides need to be highly selectively enriched from complex biological samples for mass spectrometry analysis. Herein, a new type of hydrazide functionalized core-shell magnetic nanocomposite has been synthesized for highly specific enrichment of N-glycopeptides. The nanocomposites with both the magnetic core and the polymer shell hanging high density of hydrazide groups were prepared by first functionalization of the magnetic core with polymethacrylic acid by reflux precipitation polymerization to obtain the Fe3O 4@poly(methacrylic acid) (Fe3O4@PMAA) and then modification of the surface of Fe3O4@PMAA with adipic acid dihydrazide (ADH) to obtain Fe3O4@poly(methacrylic hydrazide) (Fe3O4@PMAH). The abundant hydrazide groups toward highly specific enrichment of glycopeptides and the magnetic core make it suitable for large-scale, high-throughput, and automated sample processing. In addition, the hydrophilic polymer surface can provide low nonspecific adsorption of other peptides. Compared to commercially available hydrazide resin, Fe 3O4@PMAH improved more than 5 times the signal-to-noise ratio of standard glycopeptides. Finally, this nanocomposite was applied in the profiling of N-glycoproteome from the colorectal cancer patient serum. In total, 175 unique glycopeptides and 181 glycosylation sites corresponding to 63 unique glycoproteins were identified in three repeated experiments, with the specificities of the enriched glycopeptides and corresponding glycoproteins of 69.6% and 80.9%, respectively. Because of all these attractive features, we believe that this novel hydrazide functionalized core-shell magnetic nanocomposite will shed new light on the profiling of N-glycoproteome from complex biological samples in high throughput. © 2014 American Chemical Society.

Lei R.,Shaanxi Coal and Chemical Technology Institute Co. | Gao L.-X.,CAS Changchun Institute of Applied Chemistry | Jin R.-Z.,CAS Changchun Institute of Applied Chemistry | Qiu X.-P.,CAS Changchun Institute of Applied Chemistry
Chinese Journal of Polymer Science (English Edition) | Year: 2014

A series of sulfonated polyimide copolymers as novel proton exchange materials were synthesized by the polycondensation of 1,4,5,8-naphthalene- tetracarboxylic dianhydride (NTDA), sulfonated diamine based on pyridine group and diamine containing N-phenyl-1,2,4-triazole moiety. Flexible, transparent and tough membranes with high thermal stability and good mechanical properties were obtained. They exhibited good stability in boiling water and Fenton's reagent at 80 °C. More interestingly, a nonlinear relationship between proton conductivities of the resulting membranes and the degree of sulfonation (DS) was observed. The membrane with 50% DS exhibited the maximum proton conductivity, which was due to the combinational contributions of sulfonic acid and N-pheny-1,2,4-triazole groups. Thus, the N-phenyl-1,2,4-triazole moiety in this study not only can depress water absorption but also increase proton conductivity, especially at low DS. © 2014 Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg.

Duan M.-Z.,Shaanxi Coal and Chemical Technology Institute Co. | Xu M.-J.,Shaanxi Coal and Chemical Technology Institute Co.
Xiandai Huagong/Modern Chemical Industry | Year: 2015

The structure and superiority of slurry reactor, as well as its existing problems have been introduced in this paper. Furthermore, research achievement of F-T slurry bed reactor in China in aspects of structure improvement, simulation and expansion of syngas conversion have been presented. In the end, the future of slurry bed has been forecasted. ©, 2015, China National Chemical Information Center. All right reserved.

Kou L.,Zhejiang University | Kou L.,Shaanxi Coal and Chemical Technology Institute Co. | Liu Z.,Zhejiang University | Huang T.,Zhejiang University | And 4 more authors.
Nanoscale | Year: 2015

Supercapacitors with porous electrodes of graphene macroscopic assembly are supposed to have high energy storage capacity. However, a great number of "close pores" in porous graphene electrodes are invalid because electrolyte ions cannot infiltrate. A quick method to prepare porous graphene electrodes with reduced "close pores" is essential for higher energy storage. Here we propose a wet-spinning assembly approach based on the liquid crystal behavior of graphene oxide to continuously spin orientational graphene hydrogel films with "open pores", which are used directly as binder-free supercapacitor electrodes. The resulting supercapacitor electrodes show better electrochemical performance than those with disordered graphene sheets. Furthermore, three reduction methods including hydrothermal treatment, hydrazine and hydroiodic acid reduction are used to evaluate the specific capacitances of the graphene hydrogel film. Hydrazine-reduced graphene hydrogel film shows the highest capacitance of 203 F g-1 at 1 A g-1 and maintains 67.1% specific capacitance (140 F g-1) at 50 A g-1. The combination of scalable wet-spinning technology and orientational structure makes graphene hydrogel films an ideal electrode material for supercapacitors. This journal is © The Royal Society of Chemistry.

Yang Y.,Shaanxi Coal and Chemical Technology Institute Co. | Fu D.,Shaanxi Coal and Chemical Technology Institute Co. | Li G.,Shaanxi Coal and Chemical Technology Institute Co. | Zhang Y.,Shaanxi Coal and Chemical Technology Institute Co.
Zeitschrift fur Anorganische und Allgemeine Chemie | Year: 2013

The organically templated pentaborate [C10N2H 9][B5O6(OH)4]-H3BO 3-H2O (1a) was synthesized by boric acid and 4, 4′-bipyridine in aqueous solution and characterized by single-crystal X-ray diffraction, elemental analysis, FTIR spectroscopy, thermogravimetric analysis, powder X-ray diffraction, and photoluminescence spectroscopy. The compound crystallizes in the triclinic system with space group P1 (a = 9.196(3) Å, b = 9.822(3) Å, c = 12.113(3) Å, α = 66.243(3)°, β = 76.998(3)°, γ = 75.067(3)°, V = 958.4(5) Å3, and Z = 2). The polyanions form a novel 3D supramolecular network with three kinds of channels by extensive hydrogen bonds. The title compound shows a UV photoluminescence with an emission maximum at 372 nm upon excitation at 248 nm, and the photoluminescence can be modified from UV to blue by means of a simple heat-treatment process. The pentaborate could be a promising blue component for possible application in the white LED. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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