Novel metal-free catalysts were synthesized form maleic acid (MA) and citric acid (CA) based polymers for hydrogen generation form NaBH₄. Surfactant-free-self-emulsion polymerization technique was used to synthesize poly(Maleic acid)(poly(MA)), poly(Citric acid)(poly(CA)) and poly(Maleic acid-co-Citric Acid) poly(MA-co-CA)) polymeric micro-particles in a single step. The prepared catalysts were characterized by zeta potential, SEM, FTIR and TGA. The hydrodynamic diameter of the poly(MA), poly(CA) and poly(MA-co-CA) micro-particles were found to be 0.681, 1.273, 1.604 µm and the zeta potential of this micro-particles were found to be −6.90, −5.69 and −7.73 mV, respectively. Various parameters affecting the rate of H₂ production of polymeric catalysts, such as the amount of microparticles, the amount of NaBH₄ and the ambient temperature were investigated. Hydrogen generation rate(HGR) was calculated as 84 ± 44 ml H₂ g⁻¹ min⁻¹ for 50 mg poly(MA-co-CA)micro-particles in the hydrolysis of 50 mM NaBH₄. The activation energy(E_a) of hydrolysis of NaBH₄ catalyzed by poly(MA-co-CA)micro-particles was calculated as −1.66 ± 0.76 kJ mol⁻¹, which is much lower than similar studies reported in the literature. The prepared poly(CA), poly(MA) and poly(MA-co-CA) micro-particles were shown to be very effective catalysts in H₂ generation by hydrolysis of NaBH₄.

新型无金属催化剂由马来酸 (MA) 和柠檬酸 (CA) 基聚合物合成，用于从 NaBH ₄产生氢气。采用无表面活性剂自乳液聚合技术合成了聚马来酸(poly(MA))、聚柠檬酸(poly(CA))和聚马来酸-共-柠檬酸)聚(MA) -co-CA)) 聚合物微粒在一个步骤中。用zeta电位、SEM、FTIR和TGA对制备的催化剂进行了表征。发现聚（MA）、聚（CA）和聚（MA-co-CA）微粒的流体动力学直径为 0.681、1.273、1.604 µm，并且发现该微粒的 zeta 电位为 -分别为 6.90、-5.69 和 -7.73 mV。_{影响 H 2}速率的各种参数研究了聚合物催化剂的生产，例如微粒的量、NaBH ₄的量和环境温度。对于 50 mg 聚 (MA-co-CA) 微粒在 50 mM NaBH ₄的水解中的氢生成速率 (HGR) 计算为 84 ± 44 ml H ₂ g ^-1  min ^-1。聚(MA-co-CA)微粒催化NaBH ₄水解的活化能(E _{a )计算为-1.66±0.76 kJ mol} ^-1，远低于文献报道的类似研究。制备的聚(CA)、聚(MA)和聚(MA-co-CA)微粒在H _{2中被证明是非常有效的催化剂NaBH 4}水解生成。